MORE DYNO TESTING! Low Compression Head vs Stock Head!!
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- เผยแพร่เมื่อ 2 มี.ค. 2021
- Today the IRC Tire guy continues his review of the TSP Low compression Head and ECU Remap with in depth DYNO testing!
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I always ignore “max HP”, I prefer “usable HP range”, I.e. where your type of riding would typically sit.
Down low max hp/torque comparisons are way more interesting than top end max values as I don’t ride in those.
TSP promote their products as not being about peak horsepower, but more about increased performance, smoothness and rideability at 0 to 1/2 throttle openings. Can you comment on your thoughts on this or provide more information regarding this in your next video. Love the work you put in to these by the way. This is my favorite channel for rider tips and hard enduro.
These are the videos that are a great. There are so many videos showing mods for street bikes with dyno testing. Dirt bikes don’t have this same reviews going for them. Until now! Thanks for doing such a great job on getting the numbers out there.
Yay, new upload. Makes my day when you upload. And also please make more technique videos.
Wow Rich. Your reviews are way ahead. And the ec 300 is a game changer. Keep up the good thing
Great content I'm not seeing anywhere else - thanks and keep it up!!!
Love this series. Thanks Rich
This channel is putting out some great content 👍
I love the new mic setup. Much better!
Man I love your content, your delivery, and your grate riding. You allso got mentioned by Slavens wich allso seems to like you - wich is uncommon for the ol' geezer but you deserve it.
This stuff is way over my head, I don't even own a 2t but still interesting. Looking forward to the air filter video.
Good sir, I ran the TSP with a fresh VX33 rear at my local hare scramble and it was wheelies everywhere. Well chuffed.
Would love to see these video's go into more detail. Things like filming the dyno runs in a longer format with commentary ect.
Hi Rich, great info. I reckon the area under the graph would give you the best data for numbers relating to usable Power and Torque. Peak numbers are allmost irrelevant on these bikes.
Muchaaaaaa información Ricky!!!!!
Voy a analizarla 😉
Y seguimos esperando un dino test con un escape FMF 😬
Saludos desde Argentina 🇦🇷
Dyno a high compression head with 1 or 2 extra base gaskets. the extra base gasket or gaskets will bring the compression back down some BUT it will raise the hight of the exhaust port. I used this trick on a fully built 2005 cr250 to be able to go back to pump gas and it made for a super long and smooth powerband.
I want to see some tests on the head and ECU individually to see where the gains are really coming from. The term "low compression" head from TSP is a bit misleading. Most people hear that and think it is lower compression than stock, and that is not the case
I would like to know more details as well. My '22 arrives in about two or so weeks. Once i get the warrenty done I'm trying to figure out what changes I'll want. I got a 250 instead of a 300 though but the results should be comparable. I'm worried about aftermarket heads not working with 87 octane. I normally run at least 92, but on occasion we have to fill up at country stations that only have 87 octane and the higher compression heads would leave no margin of error for those days.
I'd be curious to see two brand new pipes back to back, just to see if power varies from pipe to pipe.
No difference
you put out good content.
Another awesome video thanks Rich.. did you end up doing the idle screw mod and winding your air screw back in to around 1/2 turn out? Did this on my 2020 300ktm made a difference as suggested by Dave at TSP. Cheers again.
Would love to see some dyno testing of the GET ECU with different maps
Thank you
Indeed. Interesting. Even with the blown out pipe we can see a difference.
Rich could you please talk about your wrist support ? And do you have any tip against forearm congestion ( due to clutch with one finger holding on a hard part enduro). After few minutes I can't feel my arm anymore and that's the moment I start to make lot of mistakes.
Thanks man and a big support from France. A Sherco rider.
Rich, really can’t thank you enough for the videos. Really like the attributes that you are espousing with the low compression head. But I am curious if low compression is suited to high elevation. 7000-11000 ??? Totally appreciate your input. Thanks Erik
Could you do a test comparing the tsp head with and without the tsp tuned ecu?
Off topic....how do you like the hydra force water pressure blowout kit compared to heat and air pressure? I'm thinking of buying one.
Sounds good, Question - would putting 2 teeth more on the rear sprocket have the same effect i.e. more tractability, more torque? Cheers :-)
Any chance you captured the AFR? Would be interesting to see how lean the stock ECU is.
Pls, answer shortly, - the low compression head does gain momentum for low and middle rotations?
Interesting data, I'd love to see what something like a KTM 450XCF pulls on that dyno as well as my TX300 but I'm not interested in dropping $150 to find out... lol
I dont know if it makes for a good test, but is it possible to do comparisons with 50% throttle (maybe not using the whole revrange if this makes it more realistic/ comparable)? After all you will likely spend most of your time below 100% throttle.
You can give both percentage and horsepower reading.. that be nice.
What elevation are you riding most of the time? I have the TSP hi compression head, but I live at 7500 ft and 90% of my riding takes place above that. Also curious if you adjusted the power valve per TSP's recommendations per the instructions?
mind blown
wonderful videos 🔝🔝🔝🔝, I think it would be very good and informative to make a dyno with a clutch wheith vs stock, since your gas gas has 115 g more than the ktm EXC 300!
Can you test the beta xtrainer 300 2021
Your diagrams....you are using some american non-SI /non metric scales for you dyno. The torque i can figure out, but what about horsepower ? Also som american way or good old “horsepower” ? Just wondering about 40 hp only ?
Has anyone changed the head on a 250ec. Low compression.
All else equal lower compression should result in less torque and horsepower, but here the opposite happened.
Is it the accompanying ECU changing the fuel mixture? Or timing? Or does the new head change other things like the squish or the porting is better?
Not sure what to make of it, except keeping in mind that so many aspects have to work in concert.
It's not lower compression than the stock head. TSP calls it their "low compression" head because it is the lowest they offer. It does have improved squish clearance, and slightly higher comp than stock
When are you going to do the medium comp head?
When I get Time! Lots of things to do!
Your vids are great! In this video I notice you have a Rekluse clutch cover on your gasgas. Are you using the auto clutch or just the cover that supposedly enables more transmission oil?
Should dyno it with the air box cover off.
Why does it read low? Ktm 300 exc tpi makes like 48-52whp stock. Is it the dyno read way low or does gasgas just produce slightly lower numbers??
I suppose it depends on where you get the numbers from. Dirt Rider magazine finds about the same numbers on the new 300s. Husky, KTM, Gas Gas. All low 40s.
@@IRCTireUSAMoto Alright, i mean in the test it's consistent with everything else. I guess this just reads low then? Or maybe its different from EU and our exc model?
I’d be willing to bet a stock exc model makes low 40s on the dyno. No matter where you are.
I think that your assumptions with the blown out stock pipe are incorrect. Since the stock pipe has oval cross sections and using a hydraulic blow out process those oval sections get round creating a very different pipe shape. So apart from not fitting correctly any more (as can be seen in the video at the lower mounting point) you actually created a very different pipe from stock. Doing the same with an aftermarket pipe that usually only has round cross sections the dyno results would show a very different picture.
I was thinking the same thing, should have been done with air pressure and heat.
So after spending 10k u need to spend how much to get it to run like a carberated bike ?
$600
that’s how much u need to spend.
Sticking with carberated bikes until tpi is figured out!
And how much does a Lectron or Smartcarb cost in order to try and get a carbureted bike to run right?
0 never got one !
I really don’t ride much different elavation on east coast
I don’t race or compete I just ride for fun No need for all the bling , bike runs great as is !
Sooo more is more , less is more no less is bad no , fffffffFlash ahh ahh, yup going Carb
You guys know nothing
How could a lower comp deliver more power?
lower comp is better for high rpms generaly ... high comp better for low/medium rpms power ... but every engine works different
In 2 strokes higher compression reduces Port durations I think
Low compression head from TSP isn't lower than stock one ,is just lower than other TSP products.
wonderful videos 🔝🔝🔝🔝, I think it would be very good and informative to make a dyno with a clutch wheith vs stock, since your gas gas has 115 g more than the ktm EXC 300!