I had a Full Delkevic system fitted on my 2002 VTEC last weekend. On the ride home (10 miles) it showed up a few strange flat spots and general unhappiness in lower rev range plus a lack of power. Yesterday I took the flapper hose off, taped the hole and reinserted the hose (closed). I unplugged the PAIR and taped the connectors up (for moisture). Started it up and higher than normal idle hmmm. I looked up the marble in hose mod and I don't have any marbles so I took the hose off and gaffer taped the air box hole and reattached the hose (closed). I took it out today and did an overall road test (B roads, fast A roads and a dual carriageway) The bike is now running like an absolute dream. No flat spots etc and power delivery is fantastic. If the mpg is better or worse I really don't care, it's now running like a Honda v4 should. Kev, thank you for the video.
Well.. I made the modification with flapper, valve and with and without snorkel. I feel that the removal of the snorkel is not a key element of this modification. IMHO it improves but not a lot. The main change comes from flapper and valve. It is also true that blowing some hot air on the snorkel it gets out quite easily without any risk of damaging the plastic enclosure. Now the bike is much more fluid at low RPM. Recommended. Thanks again for this video lesson. Well appreciated. Cheers.
I bought a 2009 VFR 3 months ago. I love them bike apart from the jerky throttle response around 5000 rpm. I saw your mod so thought I would try it as if it didn't work as I could easily put it back to stock. I did the flapper and snorkel first and it improved the drivability and the intake noise is amazing! I have now done the pair mod and it is so smooth it is like a different bike. Thanks for the advice
When disabling the flapper, simple square inch of electrical tape over flapper pipe and replace the rubber hose, nice neat job. Snorkel removal does nothing to help the bike breath, just changes induction noise slightly, the hole in the snorkel is consistent, it doesn't get smaller at any point
For what it's worth, I did the flapper mod and snorkel removal and my VFR idles so much better and low speed throttle response, i.e. stop and go, are much smoother. Makes it more comfortable to ride at lower speeds in my opinion. Nice video.
I bet Ken is also thinking, I can't believe these videos are 4 years old already. Keep up the great work, I always look back on your videos when I'm working on my VFR
Did the same mods to my 2002 back in 2007. Left the snorkel inplace also disconnected the air box air temp sensor and crossed the terminals with 280 ohm resister, replaced the fuel pressure regulator valve, disconnected the O2 sensor and crossed with a 330 ohm resister (one in each socket). Got the mpg down from 56 to 32 MPG. No more flat spot prior to VTEC engagement and now smiling from ear to ear.
So you're getting worse milage after the mod or? Thinking about doing this as i hoped it would improve low RPM mileage (since i ride alot of b roads). Dont mind the way the bike runs low RPM stock just was hoping it would make it run a little more frugally.
@@lv0ll9 technically yes. worse MPG now but overall much happier with the riding experience after the mods and no regrets. My bike was for the CA market. I believe it was made for a lean CA fuel requirements and Honda did not get it right as far as the VTEC was concerned. The mods I did were aimed at smoothing out the VTEC transition only based on things I read in the VFR forum. As a result of carrying out those mods the side effect was to lower the overall mpg from 56 to 32 mpg but I was totally OK with this as the overall riding experience was so much better. Hope this helps! Good luck.
@@wirenut3020 Totally understand your skepticism. My model was for CA. An engine that was starved for petrol and air and a complete ignition system designed to reduce emissions (and consequently performance) to meet the CA Smog requirements for that year. On the first (long) ride I did I filled the tank and got on the freeway. (Think M or A road) and remained at a fixed speed over a distance (I no longer remember how far exactly although might have it in my riding log) The next time I filled up I divided the number of miles traveled by gallons consumed and the result was 56MPG. However, as stated in my previous posts, the riding experience was horrible with less power and an extremely rough transition to to VTEC. (So bad in fact that I considered selling the bike) I found the mods on the VFR forum and the bike ran much better with a far smoother transition to VTEC afterwards. To me the riding experience comes first. I would rather have a motorcycle performance that is smooth and predictable, (I now average around 32 -ish) than one that lacks power or predictability at high mpg. I prefer to focus on fun factor and quality of ride over higher mpg.
i removed even the flap with his plastic sheet from the airbox and now I have a big hole. it's really sounds great, I have more power between 4-5000rpm and the gas from the exhaust does not smells as unburned fuel like it was before. Also, I noticed that the water temperature is a little bit cooler now, but at the same time, after a ride I can hear the bike ticking from the hot, and I think the frame is getting wormer.
I have a 25 anniversary vfr, it is ok at touring but underpowered and wheelbase is long and it's heavy but stable, really the early years are the best with gears.
I cant wait to get my 2006 VFR800 this coming weekend, its about 300 miles away from me. I can either shipped it or ride it home while snowing in a 30f degree weather.
One tip for the vacuum line for the flapper, bend it on itself and zip tie it. That should prevent anything going in and last until you need to cut it. Cheers!
Kev Easier way to do the flapper mod is to remove the pipe from the valve on top of the airbox tape over the valve with electrical tape so NO air can get through and put the pipe back on.😉
I just bought the bike used, and your tutorials are a god send. I did this video today and clutch bleed tomorrow. My air filter is disgusting also so replacing soon. And just a little pro tip to go along with the video: if you twist the little knob by engine cover clockwise a bit, it'll increase idle rpms and bike sounds so much nicer if needed.
I'll never understand VFR800 5th Gen owners choosing to disable the intake flap. I own two 5th Gen VFRs, a '99 and an '01 because I love them so much I had to have one from both halves of the 5th generation. Why on Earth would you disable the intake flap? You don't like the hard sound of the air box hitting resonance at about 7,000 on the long intake track and then, after the flap opens up the short intake track you get to hear it hit hard again at about 10,500? Where does this weird belief come from, this conviction that a random VFR800 owner knows more about matching the volume of of an air box to a motorcycle engine and the computed fluid dynamics of the airflow in that system than a whole Honda engine design team?
You can use the C spanner and extension from the toolkit to prop the fuel tank up (put one of the bolts back and the extension locates on that to stop it slipping). That works a treat; no need for substitute pieces of wood. Assuming you have the toolkit for the 'bike. Good video; although I don't seem to have the same issues with my 09 plate VFR so will not be doing the mods. Yes; I've checked and they have not been done.
thanks Kev did these all today and its like a different bike! Massive improvement, low down jerkiness gone and that horrible flat spot about 4k gone too just nice linear v4 power! Thanks for the vid.
Ty so much i do all steps and the bike works perfect Great sound and more aceleraration in lows rpms. Conbinate whit Erion exaust sistem and K&N air filter I feell the bike more lightweight
The Pair valve is open when not controlled by the ecu. Disconnecting the wires means it is now open! Also the purpose is to introduce oxygen so that any unburnt emissions will fully combust. If you were to block the hose off it means that your O2 sensor will read it as rich and will lean out your mixture. Pretty much the opposite of what you said. And the other thing is that your system is engineered around the Pair valve being functional.. The burning of the leftover gasses increases the temperature of your exhaust which is used to heat up the catalytic converter to its temperature of optimal efficiency. More than one VFR owner has put the bike on a dyno before and after these three mods and found a loss of 2-3 hp. Snorkel mod makes it sound good though!
To be fair mate, I did a little research into what you said above and can actually confirm that you are correct about the PAIR valve being in an open condition when not receiving 12V. I'm surprised that I didn't come across this little snippet of info when I was doing the research for the video! However the Honda Manual confirms this. I have since tried this mod by adding a tight fitting marble into the hose between the airbox and PAIR valve in order to block the airflow entirely as i have found others have done. I have to be honest that I am a little underwhelmed anyway. I am likely to return the PAIR valve back to stock but I do enjoy the added sound of the snorkel delete as you said. I will upload a video in the near future about my thoughts on these mods as soon as I get the opportunity. Thanks for your constructive comment though Tim. Stay tuned!
Difference here though, is that the bike is running rich with the pair valve, removing it causes the engine to run leaner, resulting in better fuel mileage and a ratio closer to the golden 12:1 for optimal power. This is why you should have the bike tuned after this mod, to make sure it is in the golden ratio and is making good power. Big power mods though are the snorkel and the flapper, allowing quintuple the airflow into the engine, meaning more air, more gas, more power overall
@@ASadP1ckle That's nonsense. The area of the opening to the airbox with and without the the snorkel is the same. It does not increase airflow. At low RPM the flapper closes because the engine needs fewer CFM. Closing the size of the opening does NOT decrease the amount of air available to the engine since the amount of CFM is easily achievable with either the larger or smaller openings. What it does is increase the velocity of the incoming stream. It's just physics. The resulting higher inertial velocity of the airstream increases efficiency at low RPM. And really I have not found a single person that can show you a dyno run before and after these mods who can show you a power increase.
Have you pulled a snorkel from these bikes? I have. The intake area has greatly increased with it's removal. Do the math, you take out the restriction, airflow increases
@@ASadP1ckle yes. I have a 98 5th gen. The snorkel removal increased the sound level. But the opening is still the same size. The same amount of air will enter either way.
Thanks for the excellent video, I’ve just found it after being out on mine and can’t stand the jerkiness of the throttle at low revs. I’ll do this tomorrow, cheers Kev 👍
An actual beneficial vid on the vfr800... vunderbar....!!...you can stuff a prefilter material in place to catch debris...caps or shrink tubing work well.....the fresh air/exhaust bit...kinda like vw diesel engineers knew better as well..😏🤓🤔😎....
You will probably find that the mod was done before. When I sold mine I put everything back to standard as the dealer requested. good video by the way.
Coming to this comments section late to the party and being a bit of a debbie downer, but the purpose of removing unburnt hydrocarbons from the exhaust isn't to save the polar bears, it's to avoid producing toxic/carcinogenic emissions. It's not so much the polar bears it's helping, more yourself and those around you. Climate change and pollution aren't the same thing! Anyway, happy riding, I'm looking at getting a VFR of some sort and your maintenance videos are very informative.
I’ve just done this and personally it really improves the jerky throttle and aids the low speed manoeuvrability by miles, why Honda did this in the first place is beyond me? Great video chap
I notice you didn’t block the PAIR valve pipe from the box? I personally haven’t but a lot of people recommend it as the pair valve apparently still works if you unplug it? Doesn’t make any sense to me
@@andyjamestf Fair question! Your right, I didn't bother and the reason for that is that the valve is essentially a reed valve which is operated via a solenoid. If the solenoid doesn't operate then neither does the reed valve. There is no way for air to leave the air box and enter the exhaust with the solenoid deactivated. Each to their own though. I won't tell someone they are wrong if they wish to do that! I just don't feel it is necessary.
Kevs Shed that was my theory, loving the channel it would be nice to see a coolant change video there’s no decent step by step guides out there Cheers Andy
Alex Morgan absolutely! Air filter has been replaced naturally, however the point was that this costs nothing yet is reversible! 👍🏻 thanks for watching!
@@KevsShed haha!. Im a professional musician, and my new fave bike for the mountains is my 99 5th gen. Just changing the forks guts, and thanks for the video!
Great video, thx for sharing. I'm new to the VFR & heard a lot about these mods & your video has been the most informative. Pls can to tell me what the bike felt like afterwards, could you notice a difference low down in the revs
Just done your mod i had the same flat spot, but with the pair valve, I've seen some are saying that you should blank the air outlet on the bottom left of the airbox what's your thoughts on this, cheers mate, I really find your videos very helpful 👍
Hola ...desde chile..tengo la vfr800 crosrunner 2012 y viene limitada a 210 km/h.a 9000 rpm..en 6ta marcha ..las demás marchas cortan a las 12 000 rpm...se podrá sacar el limitador de velocidad. ..no sé si habrá k desbloquear el computadora o el limitador viene en el tablero ..saludos desde chile .🇨🇱✊💨💨💨
i can see a shit tonne of dust over and round the airbox .. arent you worried about any dust going inside the airbox now you've removed the snorkel ? seems like it was doing a job of trying to source "clean-er" air.. i suppose you'll say just replace/clean the filter more often ?
thank you for your nice video on this! I have a question: i did these mods a while back, but i had an issue after disabling the pair valve. my bike had a hard time warming up to its operating temperature, may i have done this wrong? I plugged the connector of the valve back in and it was warming up just fine again…
Did you leave the pair valve or plugged in still or disable it again? I have a VFR and have done none of these mods yet, wondering which ones I should do, if any. I heard lair valve was the only one that mattered and made difference? The snorkel is just for sound, and not necessary? What is yours like now, what is your experiences?
After watching your video again I’ve decided I’m going to put a power switch on the fairing for PAIR system. (I presume the positive is the red wire and not the green?) This is so I can have the pair switched off around town and on everywhere else.
Good tips and pretty clear... but try as I might I cannot work out how to get the snorkel out in my '02 VFR. Thing seems to be jammed in super tight and there's not enough room to wiggle it out. Any hints?
Great video... Thx indeed. I assume there’s no chance to pass government emission tests (in Italy mandatory every 2 years) with this modification. To put in and out the snorkel seems to be maybe a bit difficult. What about making this modification but leave the snorkel in? Anyone tried this? Any major difference? Thanks for any comments and thanks for the great video made!!!
Hi,Cheers for the tips . I am old school and just bought a vfr 800 gen5 1999 . I have a KN air filter .And did the flapper and the snorkel mods . I dont it has the mod for the back of the box ????? It sounds awsome the intake wow .Just like a race RC45 sound.Just a question with the ECU richen the mixture ?? As with mods will it not run on the lean side . The performance is also up. It is a good job i did the mods as then i removed the snorkel could see like paper . HUUUMM Removed the top to reveal a mouses nest , Air box was 2/3 full of paper . the filter was partly eaten . So i fitted a KN filter , I wouldnt want to damage the engine , Its a 99 31k in red lovely bike . My next mod will be a stainless black widow can . Could this cause problems . Regards Dave
Quick question, i had done this a few years back, but today I put it back to stock. However i noticed the flapper open, and stayed open. When does it open close? My service manual says its open during idling and only closes " with increasing engine speed quickly, and throttle angle :over 38 degrees with engine speed below 6500rpm, With dreasing engine speed quickly, Throttle angle: over 35 degrees Engine speed : below 6000 rpm"
Is it worth buying the vfr from 2005 ish as I was thinking about getting one. I dont like the sound of the snatchy throttle response in tbe comments. I would be coming from a bandit 600. Or is a bandit 1250 a safer bet.
Great bikes to be fair, I have had a Bandit 600 in the past and the VFR is light years ahead of it in terms of torque and power. I would say as far as handling that they are fairly well matched although the VFR is a much heavier beast! Hope this helps! 👍
Thanks Kev for all of your videos, you make working on the VFR easy! I made these mods but I had to return to original the pair valve mod. Throtle was a bit jerky when idling and smelled a lot of petrol, seems like the mixture was not being done properly. Flapper and snorkel work perfectly. Do you know if there is any step missing?
Hi Kevin just watched the pair valve removal vid.you only disconnected the pair solenoid that is not enough to delete it you also have to block off the clean air side pipe as the air is still able to pass through the solenoid and into the system,in fact to block it fully you need to fit blanking plates at the Reed valves and remove the solenoid and piping.i just bought a 03 vfr800 and I will be doing it myself.👍🇮🇪
Maybe its a future vlog for you.i just ordered the blank plates and air filter block off plug myself on ebay.i think our bikes have a catalytic converter that has to go aswel.
@@KevsShed Hi Kev would you now say its a good idea to block the pipe from airbox to the pair solenoid with a marble to shut off any air going to the system ?
The throttle feels much less snatchy, but the best benefit in my opinion is the sound that the flapper and snorkel removal makes, it sounds awesome when the vtec comes in! ;)
Hi Kev, i bought a 2003 vfr the other month , and finally got it on the road a couple of weeks ago. I did my first long ride with attention to fuel usage. Filled it up as i left , topped up the used when i returned. 60 miles , 12£ of fuel. Seems a tad high to me. ( even me and my b...pillion. ) Easter weekend, i got the tank up and found that the snorkel mod and flapper mod had been done. Ive jammed the flapper closed for now because i cant get the plastic T connector of the vacuum to the tiny pipe that comes off the electric actuator. Right down between the frame and engine. Any suggestion how i could plug that in ? I learned that the PAIR sends extra air into the exhaust and so the EFI delivers more fuel... was that my high guel usage cause ...no. it was also disconnected. Will me blocking (and later restoring) the flapper bring my MPG to normal levels? Or could it be something else? Any insight or help will be appreciated. Alex (Suffolk)
According to some online calculator : it actually doesnt seem too wrong , but my mayes , both car and bike riders thought my usage seemd very high... ""Here is the likely cost for a journey of 60 miles costing 150 pence/litre in a vehicle averaging 45 miles/gallon. You will use approximately 6.67 Litres Which will cost approximately £10.00 The actual cost can vary due to a number of factors, including number of passengers/weight, average speed, traffic & terrain""
@@KevsShed Thanks Kev...I had some reservations re early Vtec 6th Gen & how to address known traits, but your vids are very helpful...I have subcribed thanks
Does unplugging the PAIR valve not trigger the engine management light? I'd have thought unplugging it would result the ECU detecting a P0410/P0411/P0412 fault, i.e. a faulty PAIR valve.
@@KevsShed That's interesting because the EML light came on on my SH300i and an OBD2 scan threw up code P0412. At £75 for a non-performance part I was leaning towards removing the PAIR valve as so many have done. However, I the problem turned out to be that the (very fine) trigger and earth wires had broken away from the feed plug, which is the same as disconnecting the plug as in your vid. Anyway, after effecting a repair and clearing the fault code all is back to normal.
I would imagine that the management on the SH300i is a bit more modern and capable. The EML comes on with the ignition and extinguished upon engine start, as it should. I don’t know of anyone that has an EML after performing this mod.
@@KevsShed I think you're right Kev. I don't think my 2004 Goldwing has that level of wizardry and my 1981 Goldwing is positively stone age, although beautiful!
Do you mean Positive Crankcase Ventilation Valve? If so then no, nothing like it. The PAIR valve allows fresh air from the airbox to directly flow into the downstream of the exhaust gases. It is nothing more than an environmental band-aid.
Like I said in my video it is pretty much free to try, try blocking them off if you liker, if it doesn't work out then revert back, find out what works for you and your bike! 👌😎
@@KevsShed I've done the snorkel and flapper and is super so will try the pair and see how goes but 1st I need regulator mosfet upgrade bloody 2nd time to fail. Will for sure try the pair to see how runs. Love the vids keep up the good work 👍👍
No the electrical connection on the 5th gen is behind the left fairing in front of the rad area. the PAIR valve is in the front of the bike up above the oil cooler area.
Have you kept these mods then kev 2 years on or has is it back to stock? Only mod I am slightly concerned about is the Pair Valve, worried it'll cause issues down the line like fueling issues. If I fitted a PC5 to the Bike is there any other work I'd have too? Thanks
Hi Kev recently got a 2002 VFR vtec and going to do the snorkel removal this weekend. Do you need to do the other 2 mods aswell or can you just do one?
@@KevsShed I'm still working mate so get a few miles on my hard as nails gen 5 commuter in this nice weather. Recently had to replace exhaust 21 year old and cracked all over. Replaced with beautiful black widow system, larger bore headers and straight through or DB killer. Sounds mint and 1100 to 5500 rpm off like a scolded cat then terrible flat spot 7000 to 12000 she's off again. Unfortunately it looks like the only cure is power commander about £450 including the rolling road. Can I justify spending so much money on my 40000 mile work bike.... But I love riding her and she's ruined.
@@sidewaysaction9983 I'm trying to justify to myself the costs of a PC5 but it's difficult. Especially as I have other bikes/cars that also have need for things! :(
This is a warning message to all people who would like to perform this manipulation. I tested it, indeed at low speed it's much smoother... BUT My fuel consumption increased significantly! even with the same driving style. If the manufacturer has implemented these things, it's for a reason, be warned. As for me, I reverted it to its original state. V
Baz Jones the flat spot has definitely disappeared and the induction noise is better, as for actual hp increases, it’s hard to say without putting it on the rollers!
@@KevsShed no worries. another thread suggests they are very similar but some say the pair valve, if electrically isolated, is normally open so needs the air blocked rather than electrical isolation. i'll have a good look next time i'm mooching about under the tank.
Did these mods on my 2008 model after numerous posts and videos on internet. To me none of these mods makes any difference at all in drivability and performance. It's just a placebo.
It's Pulsed Secondary Air Injection! I know this as I can read a manual, spookily enough the Kawasaki and Suzuki manuals I have also call it the same thing, still feel free to make up your own acronyms if it makes you feel warm, fuzzy and clever! 😂
for years I bought bikes and did all these mods and in the end the bikes were really loud and I had to wear earplugs when I rode or I would get ear fatigue and the handling is almost always worse with all of the "upgrades" because they are all designed to be used on a track and hellllooooo we dont ride on the track except for rare occasion do we? and what's wrong with a quiet comfortable bike that is reliable and predictable.........Honda and all the other manufacturers spend millions of dollars and endless hours with expert engineers optimizing these bikes on dynos and under rigorous test conditions and it you think some hack in a garage is gonna improve on that using an entirely unscientific approach you're welcome to it
I had a Full Delkevic system fitted on my 2002 VTEC last weekend.
On the ride home (10 miles) it showed up a few strange flat spots and general unhappiness in lower rev range plus a lack of power.
Yesterday I took the flapper hose off, taped the hole and reinserted the hose (closed).
I unplugged the PAIR and taped the connectors up (for moisture).
Started it up and higher than normal idle hmmm.
I looked up the marble in hose mod and I don't have any marbles so I took the hose off and gaffer taped the air box hole and reattached the hose (closed).
I took it out today and did an overall road test (B roads, fast A roads and a dual carriageway)
The bike is now running like an absolute dream.
No flat spots etc and power delivery is fantastic.
If the mpg is better or worse I really don't care, it's now running like a Honda v4 should.
Kev, thank you for the video.
By the way, I didn't take the snorkel out.
In my opinion I don't think the air flow is restricted that much without the snorkel.
As the black pipe has a vacuum on it, it night be best to pop an m4 screw in it. The tape won't be air tight.
Well.. I made the modification with flapper, valve and with and without snorkel. I feel that the removal of the snorkel is not a key element of this modification. IMHO it improves but not a lot. The main change comes from flapper and valve. It is also true that blowing some hot air on the snorkel it gets out quite easily without any risk of damaging the plastic enclosure. Now the bike is much more fluid at low RPM. Recommended. Thanks again for this video lesson. Well appreciated. Cheers.
Nice one 👍🤓
I bought a 2009 VFR 3 months ago. I love them bike apart from the jerky throttle response around 5000 rpm. I saw your mod so thought I would try it as if it didn't work as I could easily put it back to stock. I did the flapper and snorkel first and it improved the drivability and the intake noise is amazing! I have now done the pair mod and it is so smooth it is like a different bike. Thanks for the advice
Glad it helped 👍🏻
Did you have to retune the bike at all? Or just do the mods and it's good to go?
When disabling the flapper, simple square inch of electrical tape over flapper pipe and replace the rubber hose, nice neat job. Snorkel removal does nothing to help the bike breath, just changes induction noise slightly, the hole in the snorkel is consistent, it doesn't get smaller at any point
For what it's worth, I did the flapper mod and snorkel removal and my VFR idles so much better and low speed throttle response, i.e. stop and go, are much smoother. Makes it more comfortable to ride at lower speeds in my opinion. Nice video.
I bet Ken is also thinking, I can't believe these videos are 4 years old already.
Keep up the great work, I always look back on your videos when I'm working on my VFR
Did the same mods to my 2002 back in 2007. Left the snorkel inplace also disconnected the air box air temp sensor and crossed the terminals with 280 ohm resister, replaced the fuel pressure regulator valve, disconnected the O2 sensor and crossed with a 330 ohm resister (one in each socket). Got the mpg down from 56 to 32 MPG. No more flat spot prior to VTEC engagement and now smiling from ear to ear.
So you're getting worse milage after the mod or? Thinking about doing this as i hoped it would improve low RPM mileage (since i ride alot of b roads). Dont mind the way the bike runs low RPM stock just was hoping it would make it run a little more frugally.
@@lv0ll9 technically yes. worse MPG now but overall much happier with the riding experience after the mods and no regrets. My bike was for the CA market. I believe it was made for a lean CA fuel requirements and Honda did not get it right as far as the VTEC was concerned. The mods I did were aimed at smoothing out the VTEC transition only based on things I read in the VFR forum. As a result of carrying out those mods the side effect was to lower the overall mpg from 56 to 32 mpg but I was totally OK with this as the overall riding experience was so much better. Hope this helps! Good luck.
I never got more than 42 mpg. I don’t have a CA model and mines unmodified. 56 mpg sounds wildly optimistic! Just saying.
@@wirenut3020 Totally understand your skepticism. My model was for CA. An engine that was starved for petrol and air and a complete ignition system designed to reduce emissions (and consequently performance) to meet the CA Smog requirements for that year. On the first (long) ride I did I filled the tank and got on the freeway. (Think M or A road) and remained at a fixed speed over a distance (I no longer remember how far exactly although might have it in my riding log) The next time I filled up I divided the number of miles traveled by gallons consumed and the result was 56MPG. However, as stated in my previous posts, the riding experience was horrible with less power and an extremely rough transition to to VTEC. (So bad in fact that I considered selling the bike) I found the mods on the VFR forum and the bike ran much better with a far smoother transition to VTEC afterwards. To me the riding experience comes first. I would rather have a motorcycle performance that is smooth and predictable, (I now average around 32 -ish) than one that lacks power or predictability at high mpg. I prefer to focus on fun factor and quality of ride over higher mpg.
i removed even the flap with his plastic sheet from the airbox and now I have a big hole. it's really sounds great, I have more power between 4-5000rpm and the gas from the exhaust does not smells as unburned fuel like it was before.
Also, I noticed that the water temperature is a little bit cooler now, but at the same time, after a ride I can hear the bike ticking from the hot, and I think the frame is getting wormer.
FFS the flapper valve put tape over end of metal tube then push hose back on .
I have a 25 anniversary vfr, it is ok at touring but underpowered and wheelbase is long and it's heavy but stable, really the early years are the best with gears.
Just did this on mine. What an amazing difference it made to the lower half of the Tachs range! Great vid!
I cant wait to get my 2006 VFR800 this coming weekend, its about 300 miles away from me. I can either shipped it or ride it home while snowing in a 30f degree weather.
One tip for the vacuum line for the flapper, bend it on itself and zip tie it. That should prevent anything going in and last until you need to cut it. Cheers!
I’ve actually taped the flapper actuator and popped the pipe back on now 👍🏻
Kev
Easier way to do the flapper mod is to remove the pipe from the valve on top of the airbox tape over the valve with electrical tape so NO air can get through and put the pipe back on.😉
Yeah that’s how it is, I just didn’t do that in the video! 🙄
Thanks for the clear and concise video. Why didn't I do this years ago when I first picked up the bike...
You sir are the VFR god. Thanks for all the content!
Wow, thanks!👍🤓
I just bought the bike used, and your tutorials are a god send. I did this video today and clutch bleed tomorrow. My air filter is disgusting also so replacing soon. And just a little pro tip to go along with the video: if you twist the little knob by engine cover clockwise a bit, it'll increase idle rpms and bike sounds so much nicer if needed.
I'll never understand VFR800 5th Gen owners choosing to disable the intake flap. I own two 5th Gen VFRs, a '99 and an '01 because I love them so much I had to have one from both halves of the 5th generation. Why on Earth would you disable the intake flap? You don't like the hard sound of the air box hitting resonance at about 7,000 on the long intake track and then, after the flap opens up the short intake track you get to hear it hit hard again at about 10,500? Where does this weird belief come from, this conviction that a random VFR800 owner knows more about matching the volume of of an air box to a motorcycle engine and the computed fluid dynamics of the airflow in that system than a whole Honda engine design team?
You are right!
You can use the C spanner and extension from the toolkit to prop the fuel tank up (put one of the bolts back and the extension locates on that to stop it slipping). That works a treat; no need for substitute pieces of wood. Assuming you have the toolkit for the 'bike. Good video; although I don't seem to have the same issues with my 09 plate VFR so will not be doing the mods. Yes; I've checked and they have not been done.
I use a stick that is 380mm long and has a point in on end to fit into the middle hole between the fuel tank bolts.
thanks Kev did these all today and its like a different bike! Massive improvement, low down jerkiness gone and that horrible flat spot about 4k gone too just nice linear v4 power! Thanks for the vid.
Informative vid as always. Really enjoying these vids on the VFR (especially the simple ones for us DIY numpties). Please keep them coming. 👍
Ty so much i do all steps and the bike works perfect
Great sound and more aceleraration in lows rpms.
Conbinate whit Erion exaust sistem and K&N air filter I feell the bike more lightweight
The Pair valve is open when not controlled by the ecu. Disconnecting the wires means it is now open! Also the purpose is to introduce oxygen so that any unburnt emissions will fully combust. If you were to block the hose off it means that your O2 sensor will read it as rich and will lean out your mixture. Pretty much the opposite of what you said. And the other thing is that your system is engineered around the Pair valve being functional.. The burning of the leftover gasses increases the temperature of your exhaust which is used to heat up the catalytic converter to its temperature of optimal efficiency. More than one VFR owner has put the bike on a dyno before and after these three mods and found a loss of 2-3 hp. Snorkel mod makes it sound good though!
To be fair mate, I did a little research into what you said above and can actually confirm that you are correct about the PAIR valve being in an open condition when not receiving 12V. I'm surprised that I didn't come across this little snippet of info when I was doing the research for the video! However the Honda Manual confirms this. I have since tried this mod by adding a tight fitting marble into the hose between the airbox and PAIR valve in order to block the airflow entirely as i have found others have done. I have to be honest that I am a little underwhelmed anyway. I am likely to return the PAIR valve back to stock but I do enjoy the added sound of the snorkel delete as you said. I will upload a video in the near future about my thoughts on these mods as soon as I get the opportunity. Thanks for your constructive comment though Tim. Stay tuned!
Difference here though, is that the bike is running rich with the pair valve, removing it causes the engine to run leaner, resulting in better fuel mileage and a ratio closer to the golden 12:1 for optimal power. This is why you should have the bike tuned after this mod, to make sure it is in the golden ratio and is making good power. Big power mods though are the snorkel and the flapper, allowing quintuple the airflow into the engine, meaning more air, more gas, more power overall
@@ASadP1ckle That's nonsense. The area of the opening to the airbox with and without the the snorkel is the same. It does not increase airflow. At low RPM the flapper closes because the engine needs fewer CFM. Closing the size of the opening does NOT decrease the amount of air available to the engine since the amount of CFM is easily achievable with either the larger or smaller openings. What it does is increase the velocity of the incoming stream. It's just physics. The resulting higher inertial velocity of the airstream increases efficiency at low RPM. And really I have not found a single person that can show you a dyno run before and after these mods who can show you a power increase.
Have you pulled a snorkel from these bikes? I have. The intake area has greatly increased with it's removal. Do the math, you take out the restriction, airflow increases
@@ASadP1ckle yes. I have a 98 5th gen. The snorkel removal increased the sound level. But the opening is still the same size. The same amount of air will enter either way.
Thanks for the excellent video, I’ve just found it after being out on mine and can’t stand the jerkiness of the throttle at low revs. I’ll do this tomorrow, cheers Kev 👍
8 minutes of a man wrapping things in electrical tape...
Only messing, good video. 👍
Paul Proctor 😂😂😂
An actual beneficial vid on the vfr800... vunderbar....!!...you can stuff a prefilter material in place to catch debris...caps or shrink tubing work well.....the fresh air/exhaust bit...kinda like vw diesel engineers knew better as well..😏🤓🤔😎....
You will probably find that the mod was done before. When I sold mine I put everything back to standard as the dealer requested. good video by the way.
Thanks mate 👍
Coming to this comments section late to the party and being a bit of a debbie downer, but the purpose of removing unburnt hydrocarbons from the exhaust isn't to save the polar bears, it's to avoid producing toxic/carcinogenic emissions. It's not so much the polar bears it's helping, more yourself and those around you. Climate change and pollution aren't the same thing! Anyway, happy riding, I'm looking at getting a VFR of some sort and your maintenance videos are very informative.
😂😂😂
Just done your modification' s
Bike definitely smoother andbetter at low revs! Sounds better to ,thank you @
Great video, I just bought a 2003 VFR a few days ago. Ill be sure to do this asap. Thanks m8!
Very clear explanation, many thanks! I'll apply this mod over the weekend as well as installing a gear indicator. Cheers, stay safe!
I’ve just done this and personally it really improves the jerky throttle and aids the low speed manoeuvrability by miles, why Honda did this in the first place is beyond me? Great video chap
Cheers buddy, glad it was of use to you!
I notice you didn’t block the PAIR valve pipe from the box? I personally haven’t but a lot of people recommend it as the pair valve apparently still works if you unplug it? Doesn’t make any sense to me
@@andyjamestf Fair question! Your right, I didn't bother and the reason for that is that the valve is essentially a reed valve which is operated via a solenoid. If the solenoid doesn't operate then neither does the reed valve. There is no way for air to leave the air box and enter the exhaust with the solenoid deactivated. Each to their own though. I won't tell someone they are wrong if they wish to do that! I just don't feel it is necessary.
Kevs Shed that was my theory, loving the channel it would be nice to see a coolant change video there’s no decent step by step guides out there
Cheers Andy
@@andyjamestf I'll see what I can do ;)
Best flapper mod to avoid risking vacuum leaks is to simply unhook the lever from the flap
Ok Kevin thanks for your time and help today 👍
Would it not have been better just to replace the dirty air filter and fit a Power Commander to sort out the low speed jerkiness and poor idling?
Alex Morgan absolutely! Air filter has been replaced naturally, however the point was that this costs nothing yet is reversible! 👍🏻 thanks for watching!
Good videos..thanks! and there is a real cool bird singing in the background.
There’s always loads of birds in the background of my videos! The wife feeds them better than she does me so they are always hanging about! 😂😂😂
@@KevsShed haha!. Im a professional musician, and my new fave bike for the mountains is my 99 5th gen. Just changing the forks guts, and thanks for the video!
@@KevsShed haha.. well you can cook too!
Great video, thx for sharing.
I'm new to the VFR & heard a lot about these mods & your video has been the most informative.
Pls can to tell me what the bike felt like afterwards, could you notice a difference low down in the revs
I had recently got another vfr800 and it had this mod done. Compared to my other 2 that didn't have this mod it killed my fuel mileage.
Did the mileage got better after the mods? I wanna know for shure as I find the mileage a bit on the slurpy side
Buenas noches ,esta modificación influye en el gasto de combustible???? .un saludo y gracias . Me encanta su trabajo ,me ayuda mucho con mi VFR
Just done your mod i had the same flat spot, but with the pair valve, I've seen some are saying that you should blank the air outlet on the bottom left of the airbox what's your thoughts on this, cheers mate, I really find your videos very helpful 👍
Hola ...desde chile..tengo la vfr800 crosrunner 2012 y viene limitada a 210 km/h.a 9000 rpm..en 6ta marcha ..las demás marchas cortan a las 12 000 rpm...se podrá sacar el limitador de velocidad. ..no sé si habrá k desbloquear el computadora o el limitador viene en el tablero ..saludos desde chile .🇨🇱✊💨💨💨
Good morning ,
I am French ,
what were the improvements?
Sincerely
Brilliant stuff kev just bought a vtec have u any videos battery removal or plan to do a video ? Cheers
thx my friend from belguim
Love it good video 10 / 10
i can see a shit tonne of dust over and round the airbox .. arent you worried about any dust going inside the airbox now you've removed the snorkel ? seems like it was doing a job of trying to source "clean-er" air.. i suppose you'll say just replace/clean the filter more often ?
I do service my bikes and cars religiously mate so that isn’t a concern for me 👌🏻
I am not able to unplug the connector to the O2 sensor. Its basically stuck and I am afraid to ruin it.......
Does anyone know what that cool bird is whistling in the background??
thank you for your nice video on this! I have a question: i did these mods a while back, but i had an issue after disabling the pair valve. my bike had a hard time warming up to its operating temperature, may i have done this wrong? I plugged the connector of the valve back in and it was warming up just fine again…
Did you leave the pair valve or plugged in still or disable it again? I have a VFR and have done none of these mods yet, wondering which ones I should do, if any. I heard lair valve was the only one that mattered and made difference? The snorkel is just for sound, and not necessary? What is yours like now, what is your experiences?
After watching your video again I’ve decided I’m going to put a power switch on the fairing for PAIR system. (I presume the positive is the red wire and not the green?) This is so I can have the pair switched off around town and on everywhere else.
Did you end up doing this?
Good tips and pretty clear... but try as I might I cannot work out how to get the snorkel out in my '02 VFR. Thing seems to be jammed in super tight and there's not enough room to wiggle it out. Any hints?
It comes but it’s quite stiff, be tough with it and it will come out! 👍🏻
Great video... Thx indeed. I assume there’s no chance to pass government emission tests (in Italy mandatory every 2 years) with this modification. To put in and out the snorkel seems to be maybe a bit difficult. What about making this modification but leave the snorkel in? Anyone tried this? Any major difference?
Thanks for any comments and thanks for the great video made!!!
I didn't realise that Italy had such stringent emissions tests! 👍🤓
Hi,Cheers for the tips . I am old school and just bought a vfr 800 gen5 1999 . I have a KN air filter .And did the flapper and the snorkel mods . I dont it has the mod for the back of the box ????? It sounds awsome the intake wow .Just like a race RC45 sound.Just a question with the ECU richen the mixture ?? As with mods will it not run on the lean side . The performance is also up. It is a good job i did the mods as then i removed the snorkel could see like paper . HUUUMM Removed the top to reveal a mouses nest , Air box was 2/3 full of paper . the filter was partly eaten . So i fitted a KN filter , I wouldnt want to damage the engine , Its a 99 31k in red lovely bike . My next mod will be a stainless black widow can . Could this cause problems .
Regards Dave
Cleaning a K&N Air Filter With a K&N Filter Recharge Kit
Lovely bird song, lovely bike noise! Just acquired my first vfr and will do these mods. Have you changed exhaust for better rumble?
Yes I have, check out the VFR800 playlist, there is loads of videos that may take your fancy bud! 👌😎
@@KevsShed thanks Kev, will do
Taping up the electrics on the Pair Valve does not disable it, you need to plug the inlet hose otherwise you will be constantly sucking air
Quick question, i had done this a few years back, but today I put it back to stock. However i noticed the flapper open, and stayed open. When does it open close? My service manual says its open during idling and only closes
" with increasing engine speed quickly, and throttle angle :over 38 degrees with engine speed below 6500rpm,
With dreasing engine speed quickly,
Throttle angle: over 35 degrees
Engine speed : below 6000 rpm"
You’ve answered your own question there Mike 👍🏻
Is it worth buying the vfr from 2005 ish as I was thinking about getting one.
I dont like the sound of the snatchy throttle response in tbe comments.
I would be coming from a bandit 600.
Or is a bandit 1250 a safer bet.
Great bikes to be fair, I have had a Bandit 600 in the past and the VFR is light years ahead of it in terms of torque and power. I would say as far as handling that they are fairly well matched although the VFR is a much heavier beast! Hope this helps! 👍
@@KevsShed Thanks for the advice/ yea I will look for a good VFR or 1250 bandit if we get out of this lockdown
Did that on my rc 46..But now fuel levem is smoking lesa tgan it is on dash...Di something get stuck when I lifted gas tank like this?
I've got a ticking noise coming from my vfr and was told this is what's causing the noise. Do you think it could be? Cheers in advance.
Great Video and very informative 👍,
Just got my VFR 800 2003, would you need to make your insurance company aware of these Mods?
Thanks John
I wouldn’t have thought so! They wouldn’t have a clue what you were talking about even if you did! 👍🏻
@@KevsShed thought exactly the same to be honest Mate 👍
Thanks Kev for all of your videos, you make working on the VFR easy!
I made these mods but I had to return to original the pair valve mod. Throtle was a bit jerky when idling and smelled a lot of petrol, seems like the mixture was not being done properly. Flapper and snorkel work perfectly. Do you know if there is any step missing?
Did these mods, didnt saw any improvements
Hi Kevin just watched the pair valve removal vid.you only disconnected the pair solenoid that is not enough to delete it you also have to block off the clean air side pipe as the air is still able to pass through the solenoid and into the system,in fact to block it fully you need to fit blanking plates at the Reed valves and remove the solenoid and piping.i just bought a 03 vfr800 and I will be doing it myself.👍🇮🇪
Absolutely correct, you live and learn 👌🏻
Maybe its a future vlog for you.i just ordered the blank plates and air filter block off plug myself on ebay.i think our bikes have a catalytic converter that has to go aswel.
@@KevsShed Hi Kev would you now say its a good idea to block the pipe from airbox to the pair solenoid with a marble to shut off any air going to the system ?
You may have hit the nail on the head... I Done what this vid does and my bike while smoother down low has lost all power after 8 to 9 k..
Just done these mods. Its new late & dark so cant ride to test it.
I'll report back after my next ride.
What do you think? I did the flapper and nothing.
Any chance of Honda introducing a couple of mods to keep your noise down and control your emissions? Especially after a Sunday in Spoons with CA?
😂😂😂
Hi can you tell me how much of a difference did the mods make ?
The throttle feels much less snatchy, but the best benefit in my opinion is the sound that the flapper and snorkel removal makes, it sounds awesome when the vtec comes in! ;)
Hi Kev, i bought a 2003 vfr the other month , and finally got it on the road a couple of weeks ago.
I did my first long ride with attention to fuel usage. Filled it up as i left , topped up the used when i returned. 60 miles , 12£ of fuel. Seems a tad high to me. ( even me and my b...pillion. )
Easter weekend, i got the tank up and found that the snorkel mod and flapper mod had been done.
Ive jammed the flapper closed for now because i cant get the plastic T connector of the vacuum to the tiny pipe that comes off the electric actuator. Right down between the frame and engine. Any suggestion how i could plug that in ?
I learned that the PAIR sends extra air into the exhaust and so the EFI delivers more fuel... was that my high guel usage cause ...no. it was also disconnected.
Will me blocking (and later restoring) the flapper bring my MPG to normal levels?
Or could it be something else?
Any insight or help will be appreciated.
Alex (Suffolk)
According to some online calculator : it actually doesnt seem too wrong , but my mayes , both car and bike riders thought my usage seemd very high...
""Here is the likely cost for a journey of 60 miles costing 150 pence/litre in a vehicle averaging 45 miles/gallon.
You will use approximately
6.67 Litres
Which will cost approximately
£10.00
The actual cost can vary due to a number of factors, including number of passengers/weight, average speed, traffic & terrain""
Hi, Thanks for sharing... Do any of these mods cause a bike to fail emissions test on a UK MOT ?
I’ve not yet seen this emissions test that you speak of! 🤔
@@KevsShed
Sorry my mistake...bikes aren't emissions checked for UK MOT ...Ignore me...sorry.
@@AW8UK no dramas buddy, thanks for watching 👍🏻
@@KevsShed
Thanks Kev...I had some reservations re early Vtec 6th Gen & how to address known traits, but your vids are very helpful...I have subcribed thanks
Still no FI errors? Just checking!
Ed J no errors at all 👍🏻
does the cbf 1000 mk2 have the same system.
Does unplugging the PAIR valve not trigger the engine management light? I'd have thought unplugging it would result the ECU detecting a P0410/P0411/P0412 fault, i.e. a faulty PAIR valve.
Nope!
@@KevsShed That's interesting because the EML light came on on my SH300i and an OBD2 scan threw up code P0412. At £75 for a non-performance part I was leaning towards removing the PAIR valve as so many have done. However, I the problem turned out to be that the (very fine) trigger and earth wires had broken away from the feed plug, which is the same as disconnecting the plug as in your vid. Anyway, after effecting a repair and clearing the fault code all is back to normal.
I would imagine that the management on the SH300i is a bit more modern and capable. The EML comes on with the ignition and extinguished upon engine start, as it should. I don’t know of anyone that has an EML after performing this mod.
@@KevsShed I think you're right Kev. I don't think my 2004 Goldwing has that level of wizardry and my 1981 Goldwing is positively stone age, although beautiful!
Does this valve works like the PCV valve on other fuel injection systems?
Do you mean Positive Crankcase Ventilation Valve? If so then no, nothing like it. The PAIR valve allows fresh air from the airbox to directly flow into the downstream of the exhaust gases. It is nothing more than an environmental band-aid.
Have you tested this on the dyno?
Is the bike still running well since did the mods?
Like a dream! 👌😎
I seen on another vid about the pair valve you néed to block the hose too
th-cam.com/video/N7Onn4iE_UI/w-d-xo.html
Like I said in my video it is pretty much free to try, try blocking them off if you liker, if it doesn't work out then revert back, find out what works for you and your bike! 👌😎
@@KevsShed I've done the snorkel and flapper and is super so will try the pair and see how goes but 1st I need regulator mosfet upgrade bloody 2nd time to fail. Will for sure try the pair to see how runs. Love the vids keep up the good work 👍👍
Is the pair valve the same location on a gen 5 1999 ??? Not really mechanical . But seems an easy mod . Cheers for sharing
No the electrical connection on the 5th gen is behind the left fairing in front of the rad area. the PAIR valve is in the front of the bike up above the oil cooler area.
My bikes been running rich and cuts out after a while from doing this mod
Have you kept these mods then kev 2 years on or has is it back to stock? Only mod I am slightly concerned about is the Pair Valve, worried it'll cause issues down the line like fueling issues. If I fitted a PC5 to the Bike is there any other work I'd have too?
Thanks
Still running them as they were. Bike is running perfectly. 👍
@@KevsShed Ah happy days Mate, Did you end up block of the pipe that runs to the solenoid and if so what did you use?
Hi Kev recently got a 2002 VFR vtec and going to do the snorkel removal this weekend. Do you need to do the other 2 mods aswell or can you just do one?
You can do as many or as few as you wish! All totally reversible too!
Does it do Anything about power and fuel efficiency?
Not really, but it's great for the addictive sound!
Does all of this still apply to the 2014 model or have they actually fixed all of these issues?
No mate, just 6th Gen
Hey I just got my vfr Dynotuned would doing this mod mess that up ?
I would leave the PAIR valve if you’ve had it on a dyno but the snorkel mod will make it sound awesome without affecting the mapping 👌🏻
Is this strictly a gen 6 mod? I`m guessing atleast the pair valve is but....
Missing the whole point of vacuum, any leaks and the ECU will over fuel to compensate.
Correct, Not sure why you felt the need to mention it though!
@@KevsShed made me smile sir.
@@sidewaysaction9983 It's always good to smile Sir! ;)
@@KevsShed I'm still working mate so get a few miles on my hard as nails gen 5 commuter in this nice weather. Recently had to replace exhaust 21 year old and cracked all over. Replaced with beautiful black widow system, larger bore headers and straight through or DB killer. Sounds mint and 1100 to 5500 rpm off like a scolded cat then terrible flat spot 7000 to 12000 she's off again. Unfortunately it looks like the only cure is power commander about £450 including the rolling road. Can I justify spending so much money on my 40000 mile work bike.... But I love riding her and she's ruined.
@@sidewaysaction9983 I'm trying to justify to myself the costs of a PC5 but it's difficult. Especially as I have other bikes/cars that also have need for things! :(
Hi Kevin what would cause the time on vfr to keep resetting themselves I set the time to the rite time then they reset themselves can you help thanks?
Only disconnection of the battery could do that mate! If the battery is fine then i'm not sure, it's a strange one that!
This is a warning message to all people who would like to perform this manipulation.
I tested it, indeed at low speed it's much smoother... BUT
My fuel consumption increased significantly! even with the same driving style.
If the manufacturer has implemented these things, it's for a reason, be warned.
As for me, I reverted it to its original state.
V
i did the mods. now I saw that there is quite a soot rash on the exhausts! Is this normal and does it hurt?
A lot of soot could be an indication that the bike it running a bit rich.these mods wouldn’t usually cause that.
@@KevsShed Just strange thet it happend afther i did the mods.
@@flyman1966 Put it back to stock and see if it improves. It would be interesting to see!
@@KevsShed will do. i did also the pair block mod. maybe thats the cause!
Kev, does doing this make any difference?
Baz Jones the flat spot has definitely disappeared and the induction noise is better, as for actual hp increases, it’s hard to say without putting it on the rollers!
@@KevsShed What video is next? You changed the brake fluid yet?
Baz Jones on the list but the next video will be up shortly 👍🏻
is this needed for a 2017 model and if so, is it the same to do? mine is stock and horrible at low rpm
Sorry buddy, I don't have a 2017 model to test with, nor do I have the manual to check. Apologies.
@@KevsShed no worries. another thread suggests they are very similar but some say the pair valve, if electrically isolated, is normally open so needs the air blocked rather than electrical isolation. i'll have a good look next time i'm mooching about under the tank.
was the tape free?
Haha! Maybe ;)
And yes they annoy the entire world
Did these mods on my 2008 model after numerous posts and videos on internet. To me none of these mods makes any difference at all in drivability and performance. It's just a placebo.
If you say so chap! Like I said, it is easily reversed if you so wish!
That's true, I did reverse them. I was just sharing my observations. Good video nevertheless. Cheers!
why do a mod that reduces your bikes power unless its to fast for you ?
😂😂😂
As anybody else here of this if anyone can help me please
Pulsed Air Injection Reed (valve)
It's Pulsed Secondary Air Injection! I know this as I can read a manual, spookily enough the Kawasaki and Suzuki manuals I have also call it the same thing, still feel free to make up your own acronyms if it makes you feel warm, fuzzy and clever! 😂
I Dont think they have creat this flapper for fun!Honda now what they doing!
Unlike you and spelling yeah? 🤔
for years I bought bikes and did all these mods and in the end the bikes were really loud and I had to wear earplugs when I rode or I would get ear fatigue and the handling is almost always worse with all of the "upgrades" because they are all designed to be used on a track and hellllooooo we dont ride on the track except for rare occasion do we? and what's wrong with a quiet comfortable bike that is reliable and predictable.........Honda and all the other manufacturers spend millions of dollars and endless hours with expert engineers optimizing these bikes on dynos and under rigorous test conditions and it you think some hack in a garage is gonna improve on that using an entirely unscientific approach you're welcome to it