Why Not to Put Exhaust Headers on Your Car
ฝัง
- เผยแพร่เมื่อ 11 ต.ค. 2018
- Exhaust headers explained and why not to put exhaust headers on your car, car review with Scotty Kilmer. Exhaust headers vs exhaust manifold, which is better? Are headers worth it? Are headers bad for your car? Is removing your stock exhaust manifold and installing exhaust headers worth it? Modifying your car's exhaust system with headers. What are headers. There are benefits to having exhaust headers in your car, but only if it's tuned correctly and not on a stock car. Car Advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 50 years.
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This is the people's automotive channel! The most honest and funniest car channel on TH-cam. Never any sponsored content, just the truth about everything! Learn how to fix your car and how it works. Get a chance to show off your own car on Sundays. Or show off your own car mod on Wednesdays. Tool giveaways every Monday to help you with your own car projects. We have a new video every day! I've been an auto mechanic for the past 50 years and I'm here to share my knowledge with you.
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More vids on cheap aftermarket parts and poor mods please!
Lol love the common sense part! Love u Scotty!
I agree completely with your explanation why is worthless to put fancy headers on your (gasoline powered) car, BUT a high performance exhaust manifold works well, very well in big Diesel engines.
Friend of mine gain 70-80 hp and 350-400lb/ft of torque on his Cat C 15 engine, plus his fuel mileage was Improved by 10-15%.So, in some cases and for some engines and applications high performance manifolds are very effective and efficient way to make your life easier (as a truck driver).
Thanks for sharing your experience with us!I've learned a lot from you!
Keep doing it!👍🍻
Make a video on how to install bolt studs, and what tools to use..
Thanks for the video. Can I suggest putting tiny cross fades on each of your audio cuts to avoid pops and clicks
Scotty's intro be like:
"Rev up your engines!"
and then he'll proceed to tell you why revving your engine is bad
Scotty is a tool.
Hilarious
Funny but Scotty also said to drive at high RPMs sometimes in order to clear out carbon buildup.
That's why I drive my Civic sedan in the redline
@@sonofagun5305 it's a joke bru
@@AudreysKitchen did he seriously bring up the italian tune-up myth?! xD
Scottys channel in a nutshell:
1. Dont ever ever ever do anything at all to any car ever
2. Buy a celica
For a daily diver , best to be kept them stock and lubed up.
🤣🤣🤣
Yep! That sums it up pretty well😆
@@JayAR_YT not really, you can put bolt on mods on your Daily, and with a simple street tune it will run better and be as reliable as before
😂😂😂😂😂
Thanks Scottie. I ended up removing my exhaust headers and while it runs a little louder now, I'm sure the engine is running much healthier!
😂
Scotty - “You cant take the catalytic converters off a car!”
Me - watch me
Already have brother all good
😂😂
1) Don't listen to Scotty
2) Install headers, exhaust, downpipe, intake, tune, turbo, re-tune & enjoy
Arlequin finally someone normal 😪
Then rebuild after breaking, that's the Motto. 😁👍
@@eduardodiaz5762 if it breaks. He also forgot injectors blow off valve wastegate fuel pump .
My M52b28 held 700bhp fine stock bottom. End
And re tune re tune re tune er tneu rt unee nr tuee ee rtnu
Yep! Scotty drives like a ninety year old man. 200HP is probably TOO MUCH for him.
Don't even think of bringing him your car for performance. Stock only.
Scotty: " dont put air in your tires its going to stretch the rubber...."
lmao, right? But you forgot the "Shaking hands in face as talks*
😂😂😂😂😂
Scottys next video: why not to buy a car
Also: why you shouldn't put gas in your car or use clean oil......ok maybe that's going too far😂
Ctfu 🤣🤣🤣🤣
“Rev up your engine”
Don’t do it with headers, it is too loud lol
“Do not rev up your engine anymore”
Damn near everything I’ve ever learned from the old timers at my shop or read up on from many different sources are contradicted by Scotty. I think he makes these videos just to get people fired up lol
yeah, that's how he makes money on youtube. sadly it makes people too scared of doing ANYTHING to their car
I swear to god, everything I come up with to do to my car, Scotty pops up on TH-cam.
THESOOTYHILUX ; Scotty doesn’t know.... ooooo... oooo Scotty doesn’t know, don’t tell Scotty
FACTS LMFAOOOO
Exhaust,turbo,etc
Lol
Dwl lol
REV UP YOUR CHOKED ENGINES WITH MINIMAL EXHAUST FLOW
Theyre still tuned for that.... the point is you need a tune if you do bolt ons.
@@Chriskelly19067 If you're building your cars engine and it has efi you'll need a tune regardless. You can either wrap your headers or heat shield everything around them for relatively low cost. So this video only applies to a small, small portion of people that don't do proper research before hand. Headers on a stock engine are only rational in you're slowly building your car and want to build the engine later down the line. If you even know what long tube headers are, chances are you're not completely naive when it comes to building an engine. And if you're building your engine it would be absolutely ludicrous to put your factory manifolds and exhaust system back on.
Ryan Frank the only thing headers do is to help extracting exhausts from the cylinder and helps in decreasing workload to remove them. After the headers has helped remove the exhaust gases you have more cylinder space for more clean air, and some vacuum to help get that air in there. What is needed then is slight bit more fuel and some timing settings that the ECU in most cases can handle, not perfectly but it can. If you want to get the most out of headers, install better cams and tune the car for optimal horsepower during certain loads, with this you can gain som mpg if the timing is set right and you are running high octane fuel.
@@FineW_TurboM111 I'm well aware of precisely how headers work. Thanks for informing me though.
Bruh.
Catback & headerback exhaust systems DO exist, you know...
Scotty: You can't remove your stock cats!
*Aftermarket cats go brrrrr*
exactly! and tons of aftermarket cats are 50-state legal.
I think Kooks presented some high flow green cats at sema that are 50 states legal now
Wait you guys put cats back on
Imagine having a pre catalytic converter O2 sensor that can tune the engine based off or air fuel ratios in the exhaust
Yeah imagine that.... imagine the computer doing the job that it was built for... that'll be awesome to see... Lmao 😝
Oh...is that why nearly every header has o2 ports?
I have headers and a straight through catback with an O2 sensor stock ECU runs perfect sounds great no issues
@@hserieshooligan1997 , No issues , for now bc when it starts you'd have to renew the whole set up... here mostly the issue is about long durability and not some years but long years , if you're a guy that likes this sort of stuff... then it doesn't matter, this is a tech channel for old people 😝...
@@hserieshooligan1997 no check engine lights for o2 sensors?
Scotty says-
“Why use toilet paper when you can just use your bare hand?! Besides, you’re gonna wash them anyways!”
Hahahaha LoL 😂😂😂 Too much ;o; LoL 😂 😂 😂 too much
🤣🤣🤣🤣🤣 omg I’m dying bro
🤣😅🤣😅
Yoo chill lol 😂
I won't shake your hand my friend
There's this old man across the street, he keeps shouting about cars and stuff to a camera...
LOL! We avoid going past THAT house.... 😂
Daniel Sykes He's got a house, but lives in the cargo area of his car he's parked in his drive.
Haha--I'd love to be Scotty's neighbor, but my wife would probably divorce me for hanging out with him and talking about cars all the time!
@@jeffzabriskie5209 Me too, I'd love to hear his stories he daren't put on TH-cam 😆
Best comment on a Scotty video, ever.
he makes a lotta good points for most newbies. ppl usually want headers before they rly need em
Anything to reduce carbon and airflow restriction to an engine , most cars ecu will relearn the engine flow and adjust according, but u can also do a remap to be accurate
Rev up your illegal headers!
Only if you live in Commiefornia
I do and I got headers on my truck
Yea!!!
Lol
Metroid Mayhem 😂
Next up:
"Why not to drive your car"
Lmao
Or why not to buy a car
Hubert M why gas is bad for your car
I think Scotty is anti car
Next up also. Why you shouldn’t buy one of them Tesla’s and run them open headers
Another thing to mention is the upstream o2 sensor is often placed on a single pipe. The ecm will only see combustion readings for that cylinder as oposed to that bank when the o2 sensor is located where the pipes meet. Fuel trims will only react to that cylinder as oposed to that bank.
Modern cars already have a header design from the factory. A lot of times made from cast iron. The old log type exhaust manifolds were quite restrictive but cheap to manufacture. Scotty’s wrong about headers only being effective for high end power. There are small diameter tube headers as well as pipe length choices to the collector to improve low and mid range performance. Also, the ecm can compensate in most cases when an aftermarket header is put on that only changes the flow characteristics on a minor level. Heat can be suppressed by wrapping headers with heat tape or using a ceramic coated header. For performance, it’s better anyway. A header is more effective if you keep the heat inside. Using the right header and exhaust is one of the cheapest performance mods that can yield the biggest gains without tearing into the engine. This is assuming the factory exhaust is restrictive.
Nearly everything he said about headers was wrong. Scotty is not a car guy. He’s a cheapskate.
Very well said my good sir!
So you don't want me to increase my engines air flow but yet you continually tell me to rev it up..
😂😂😂😂😂😂😂😂😂
Hahahahahahahahahahaha 😂😂😂😂
I said the same thing 😂
L O L
Got eem
Scotty is like the parent that wants you to get something reliable and economical
He's just telling the truth!
@@danieldagenais7945 not really
Lmfao
Just get a Toyota and be done with it.
@@inse728 wym
I've installed headers on 3 different vehicles and they improved performance and gas mileage each time. No car had to be tuned to have them work either. They worked immediately without a tune.
My '68 Cortina GT had headers from the factory -- so there was no "Mileage Increase".
Heavily modified FORD 460 cu.ins. -- no headers -- ported the intake and exhaust ports on the heads, and match-ported the ceramic-coated exhaust manifolds. Better flow without the underhood furnace temps that you get with the long-tube headers.
Desert Racer -- Long tube headers with straight pipe all the way back -- roomy engine compartment gave a plenty of air circulation and kept underhood temps way down.
@@SlikLizrd the hp gains and mileage gains has everything to do with how restrictive the stock manifold was to begin with.
@@SlikLizrd well sure, in heavily modified vehicles you won’t notice any mileage gains… since it’s heavily modified your obviously not casually driving around right? And switching from headers to headers…. Well it’s pretty simple to see why that didn’t net you much gains anywhere…. Also all that porting when you could’ve just spent the extra $100 on a set of ceramic coated headers which would drastically reduce under hood temps, hell you can touch them after you shut the car off in about 10 minutes or so
@@crimsonlight4205 It's all good, Red --
We obviously have a difference of opinion regarding the value of long-tube headers on a street-driven vehicle.
Incidentally -- headers need to be port-matched, just like regular manifolds.
@@SlikLizrd I’m just sayin, if your trying get all you can get out of a car then it’s worth it for some ceramic headers, but like you said if it’s mostly street driven hell, the way you did it is perfect. Headers have much better flow than factory manifolds (on most cars) so even port matching the manifold doesn’t help much since it’s extremely restrictive. Did you have the ceramic coat done by someone or did you do it yourself? If you did it yourself where’d you get it from? I’m looking to coat a set of headers on my boat but I’d rather do it myself than find a shop 3 hours away ( I live in the middle of nowhere) and haven’t decided on what to use.
I’ve never had problems with how my cars run after putting headers on them. I’ve honestly had them run better. I also got a flash tune on my mustang and the headers helped even more with the tune it also sounded much better with a lower rumble
I'm sure you seen a little more gas station, also.
Without tune tho they’re kinda doing more harm than good. they have too much airflow and start popping then could cause misfire from the air to fuel ratio being off.
I bought some headers for my Tesla. It sounds sweet
Dose it rumble like a subaru?
aint nobody sicker in my fiskar vroom vroom ho
Don't forget to get a loud exhaust and turbo. Plus a bigger fuel pump to increase fuel capacity for your electric vehicle.
Stevie Wonder 🤣
Next step, nitrous!
Me: Starts my car
Scotty: *Uploads video*
“Why starting your car is BAD!”
I fucken died🤣😂
So the moral of the story is: everything Scotty says...do the opposite 😃👌👍
“iT wEaRs yOuR sTaRteR aNd eVeNtUaLly yOu’lL NeEd a nEw OnE!!”
*Scotty pointing at car keys*
DON'T! ->
Technically an engine running is bad for the engine 😂😂
I'd mostly want to do it for the sound, an N52 with equal length headers can sound pretty sweet! I'm sure someone makes those with the correct geometry to just bolt on without sacrificing sensors/cats/etc.
Whenever I am feeling optimistic about working on my ol hot rod ,
I come to Scott's channel for buzz kill!
Me: hmm what mods can I install in my car
Scotty Kilmer: No
Lmao
Lol
Yeah, thats why i left the mechanics business.
It was killing my passion for modifying cars, as it seems it has done to scotty.
Toyota
Next up: 5 good reasons you shouldn’t drive your car
Next up: don’t change your oil because it costs money!
Yeah this little man says some Stupid Stuff .
Jesse Freeman Power steering fluid and Steering pump fluid? You sound like an expert.
CammedCuda I love when he claims that headers only give power in the high rpm range. There are many different flow characteristics than can increase torque, high end power, midrange pull. I just don't like that he is sooo biased. But he is a smart guy
Jesse Freeman Just picking my guy
CammedCuda when he says you need a dyno and a 5-gas analyzer to tune your car. Seems like he's talking out of his range of knowledge. Also claims people put there headers on after they mount the turbo, because everyone knows exactly where there turbo headers will mount up to and have to do absolutely no plumbing. Tuning is tuning, just because you haven't used a uego gauge and a laptop to adjust your a/f trims doesn't mean it's any harder than turning a flat head Scotty.
Been thinking of getting headers in my 05 325i and this man showed up in my recommended
Not worth it. For just going to work or getting groceries. Nobody cares how loud it is, if it looks good.
Sounds exactly like what my dad told me when I was 15 and wanted headers for my 4x4. I did it anyways and I still do it today and I’m 32 now. It’s like a habit. I think I’m getting old now though because even though I still put them on, I curse the damn things to hell every time I gotta change the plugs. Not to mention all the hassle you have to go through with re-tightening the flange and collector bolts constantly, putting fiberglass sleeves on your plug wires, and even having to run those stupid expensive short plugs which I find really aren’t much shorter than normal plugs. I’ve actually come to regret putting them on my 96 vortec this year, damn things keep springing leaks like an old garden hose. If the manifolds weren’t cracked, I’d have just left it stock.
So, like me. You don't advise doing that? I feel your pain. So happy, I sold them L.A.C.'s, and just gone stock. Saved gas too.
@@davidleekalbjr.3035 yeah I hate to sound like an old fart but for a truck that you want reliability from, I’d keep it stock.
@@moorefab8192 I'm 42. I told my kid not to do it. Just take it from an, "Ol man", words of advice. Lord knows, that's exactly what my Dad said. I know he will do what he wants, and will say it to my Grandkids.
That's it I'm putting headers on my 2019 Prius
The ones from Summit Racing are the best.
you can't put headers on your car.. you can only put a header on
Ew. I hope you got something better than a prius
Itr 1244 lol
You'll get better fuel economy since it's flowing better.
“Why not to touch your car!”
only if it wants you to
I have a car that has never broken down Scotty... It’s because I do not use it. Is that OK?
You got to ask for consent first
And if you plan to touch it, make sure to get a full disclosure agreement
"Why not to drive your car"
I put headers in my 1988 Alfa Spider and the car runs better than ever without having to reprogram anything and even getting better gas mileage. Reliability didn't suffer and I have no problems going on long trips and enjoying that great sound "al fresco".
When you change your rate of flow you will need new timing and reprogramming to compensate. You can't do just ONE thing, people always forget about supporting mods.
Not my carb
Imagine going to Scotty for a simple header install & he gives you this long 5.5 minute anti header rant before saying no. Lol
Welcome to the new age...ecu tune!
@@zains3417 do they make those for toyota celicas?
@@FirstnameLastname-pe5ib actually yes they do.
@@zains3417 r/woosh
Scotty's head would probably explode if you brought him a set of TRD headers engineered by Toyota to go on the car. He wouldn't know if they are horrible or the best thing ever since they are an official Toyota product. Kaboom!
In summary:
Headers increase power output.
Got it. Thanks Scotty.
@HexagramMan,
All aftermarket header manufacturers use dynometer data to market their exhaust products. Many products are compared by independent test facillities as well. Thus, the information is easily available to anyone willing to look at it. Exhaust scavaging is a complex matter that most do not fully comprehend. However, one thing is certain; if a vehicle owner installs a quality namebrand exhaust header that has been designed specifically for their vehicle, and for the RPM range intended, an increase in power output will be realized.
That said, it should also be noted that the remaining factory components will then pose a "restriction" to the potential benefits that are offered by exhaust upgrades. Thus, the normal course of vehicle modification for the average car enthusiast, is to upgrade system components in stages; as time and budget factors permit.
However, to make the broad and erroneous assertion that an exhaust header offers zero performance benefits, without additional component modifications is simply inaccurate.
It would be better stated:
"Relatively small power gains will be realized by modifying individual, isolated components. Whereas, multiple system mods that compliment the flow characteristics of the complete system is the key to obtaining the most gains from ones' vehicle."
I think what you meant to say is:
"To install a header alone may provide a meager 5% increase. However, to expect that increase to be 20 or 30% is stupid."
Many headers reduce low end torque in exchange for higher power output...
And increase mpg, sound better, look better, are corrosion free when new, and usually easier to remove than OEM...
Depends on the engine.
marshalllhiepler dynometer data huh? u obviously know what your talkong about your almost as smart as scotty rev up your booze and vicodin kilmer
I took the cat off my evo 10, changed the headers, downpipe and exhaust, added a 3 port valve and had it rolling road tuned. Goes like stink now. Also mapped out the rear O2 sensor. Definitely recommend.... and it's my daily.
I just put 3 inch shortty headers on my 3.8 Buick Lucerne and its amazing made the pick up 10x and really accommodated my cold air intake ls7 hydrolic lifters 90 pound valve springs and 1.:9:1 ratio rocker arms☺️🤭
That reminds me, I need to paint flames on my Honda.
Lol
If it’s not a Toyota Celica then it’s not worth buying god Scotty is a joke lol
Bro, I did that to a 75 Chevy Luv truck I had and beat a corvette by like 10 car lengths, I couldn't believe the difference
I hear flames add 19.38MPH on the top end!
That trick only works if you change your muffler bearings to the superior aftermarket hard-chromed bronze ones.
Ol scottys got an excuse to not use any aftermarket upgrade lmao
I'm cheap what do you expect
That’s Scotty 👍🏻👍🏻👍🏻
Scotty Kilmer me too🙋🏾♂️😂
Too late. Put JBA headers on 99 Sierra long ago. About 18 years ago.
@@scottykilmer hey scotty i have a 13 Honda civic hybrid it has 80k miles on it i got it when it only had 28k are they any good? Should i keep it or sale it before i have to spend a fortune fixing it? I haven't had any problem so far.
I agree with you , but what if the stock cast manifolds are cracked in to two pieces and the only replacements are junk cast made over seas that the ports are plugged with casting that you need to do all kinds of work just to get them to work for a while before they crack again anyway , good headers gaskets and hardware seem to be the only option for most people .
I put headers on almost every car I get. Even my 02 Accord V6 has headers downpipe and complete exhaust. Slight power increase.
No tuning required. Shorty's though. The long tube require more work. But have best results.
“Why not to use tires”
that's a future episode, after they come out with magnetic levitating cars
Bad idea to use tires if you are driving on the streets with them if it's raining or snowing, it's fatal.
@@scottykilmer they wouldnt make them the same as a 94 celica
@@carljohnson4996 I HAVE tham on my 91 Celica. The 94 should get the upgrade soon
pretty sure he's just joking around
Scotty is just tired of hearing all the cars and trucks with open headers pass by his house
jorge contreras hahaha
Who isnt...
Who the hell isn't?!
😂😂
No, isn't it because he cares about people and likes to give them some wise advice on how to live in our reality instead of the delusion of our crazy untamed mind machine? 😆
Keep it real friends
You can have a catt on the exhaust system instead of the header and also they do sell performance headers w/catt depending whats available for your vehicle.
Headers stay cooler than the stock manifold.
I drive 70-110miles every week day. I've saved gas using a header with a tune. Also my Engine bay isnt as hot compared to the stock manifold. I know that because I've driven the same routes with my performance headers and my stock manifold. If you want to run a header/headers as a daily with low volume, i suggest installing a muffler, catt, and/or resonator on your exhaust system.
Thanks Scotty. I was thinking about headers on my 2008 Armada since it has an exhaust leak at the exhaust manifold. Guess I'll just replace the gasket
“You can’t take your cats off your car” MF watch me.
Hunter Juelz what’s cats😂😂😂
Already did on my 350Z in Florida you can blast your straight piped car and the cops don’t care
Hold my beer, Scotty.
Took cats off my SS Camaro car ran way better and faster.
😂😂😂💯💯
I’m still buying headers next week idgaf
Howzit goin' ?
Bought them like an hour ago
Just installed my catless downpipe
@@manperformance9253 Catless = Brainless. It's illegal AND you're polluting the air for EVERYONE.
The people you're trying to impress must be quite ignorant, or blindingly gullible.
Me too💥
Eh, I’m sure it depends on the car as to how much performance you can get from upgrading headers. And while getting a tune is helpful, it usually isn’t required. Those mini-backfires are not usually caused by headers.
Yup, in most cases those backfires are caused by a leak in the exhaust somewhere close to the engine. A spot weld from a welder can fix that for you, LOL. Try that fix on a set of cast iron exhaust manifolds, Ha ha hahaha....
@@daveboling8411 or anti lag turbo stuff :)
@@daveboling8411 No, those cars have special tunes to dump a little extra fuel after it gets cut. That fuel then ignites and pops on the hot exhaust. Some cars actually come tunes like that from the factory. Ecoboost Mustang w/ performance package and Fiat Abarth for example.
Good knowledge th err re Scotty now I changed my mind about putting headers on my F150
Do it!
I’m still gon do it tho..
Dang right just ordered a set of shortys and cat delete. Here in tennessee we have no inspection
Me too
This dude doesn’t want you to do any mods to your car. Like damn every time I look up it’s why not to do this to your car. Give us a break damn
Detroit Made that’s because those mods are not for everyday driving
hes a mechanic that wants to save you money dawg
He explicitly says it was a good idea for older cars with carbs but not modern cars.
Cars come factory without mods for a reason
Lol
Can you get an aftermarket header without changing your stock exhaust? So for example, to install equal length headers for a BRZ ts without modifying the rest and then get a tune?
If you can't find it, it can be custom made, but that's a common car so if someone else isn't making them, I will!
Scotty, exhaust wrap handles the heat pretty well. You literally just mentioned exhaust wrap and then started talking about headers creating too much heat. Love your general advice. Maybe you should stick to the general stuff and leave everything else to people who have modded their vehicles.
Next up from Scotty. "Do NOT Drive Your Car: It's Bad for the Engine!" 😁
100% Truth
😂 hahahaha
Scotty logic at it's finest. 😅🤣😂
hahaha
Also bad to let it sit but what are you going to do ??
I installed high-performance mud flaps and fuel injected lugnuts on my Silverado and gained 50hp to the rear wheels.
both of them? i must have done something wrong. i did that all my power went only to the rear left, the rear right wheel got like 5 hp. i knew that mechanic was feeding me bullshit when he said that was normal.
Rocky Roadster you need a short throw dipstick
GraveUypo - I found 4 pk of special anti-slip valve stem caps that puts equal HP to the rear wheels. Even if only 1 side originally had power. Pretty amazing. O'Reilly's had them on sale for 98¢ + tax.
Thanks, Red Bird! I'll have to get one of those.
Make sure you replace your blinker fluid when you do. All tho I think mr. John Lennon lookalike in the video will give you plenty of reasons why not to change your blinker fluid.
I have a 98 honda ek hatchback how do I get more power then? do I do everything you said not to do then spend a crap load of cash to have it tuned up after ?
Question Scott, im building a 4th gen 4runner v6 for offroading and for my daily, im replacing and modding well everything. The previous owner did not take care of it very well so when I get done with most of the mods suspension, engine, gearing etc. Would u recommend new headers as well in my case?
You would probably get a more educated response asking Blippi.
Next Up:
Why You Shouldn't Have Fun With Your Car
Hahahaha
Cars are meant for transportation not for fun.
@@jaymoar3561 Who says cars can't be fun? Sure, you can chose to have a boring car and use it to get to A to B but, there are some people out there that want to have a fun car that they can install mods onto it to make it a little more then just for transportation.
Carba 99 k guys I was just trolling. Pshh
The ECU's learning tables should be able to cope with a 10% change in airflow, just need to give it time to re-learn trim tables after the modifications. That's the same reason why modern engines that spring a new air leak run poorly for a short while, then run "normally" once the ECU catches up with the leak, run poorly again when the worsening leak(s) exceed the ECU's adjustment range and still run poorly after the leaks are fixed until the ECU is reset or is given enough time to re-learn its post-fix trims.
The thing is, all the parameters the ECU can adjust to compensate for these things each have limits to how far up and down they can adjust. So sure while it might compensate now, when the engine gets a bit older or even other things like fluctuations in fuel quality, oil quality, air quality it will end up also having to compensate for them but if its already maxed out or nearly maxed out a setting to compensate for the change in airflow it's got no room to compensate for those other things.
Teardown Dan Or else the ECU just reverts to pre-set parameters, so that the engine runs rich, has poor gas mileage and loses power, rather than ‘self adjusting’.
@Matthew Stone a header will do something on a stock engine it all depends on the engine my engine in my car with intake headers avd exhaust you can gain anywhere from 15 to 30 whp depending the header and intake
@Matthew Stone headers do move than be less restrictive 😂 do you know what exhaust gas scavenging is 🤔 because that's one of the main benefits of headers and one of the things they design it to do best
@Matthew Stone with stock o2 sensor it will still gain hp you might need to install a o2 fouler on the second o2 the one that was for the cat but that's it, and like I said a headers does more than just flow better the main gains are from proper exhaust scavenging
So, if you have exhaust manifolds that are a bad design, 2002 ford mustang 3.8L V-6. The factory manifolds have a bad reputation for the welds failing as in my 02 mustang. I don't want to go back to factory headers and deal with the same problem down the road. I have found BBK shorty header that are a direct fit. What are you thoughts on this?
Just put on headers with high flow cats built right in. Bolts up perfectly. Couple minutes with my computer hooked up online for someone to tune it to make everything run perfect.
I've done extensive flow-bench tests on heads with headers attached and have used that data to match each tube to each port for the best flow throughout the valve travel. It amazes me how much can be gained and where you can get it. Now, yes, he is correct about reprogramming the fuel and timing map to match the new exhaust flow, but not completely. A lot can be gained with small tweaks without a re-map, a lot can be gained in terms of low to midrange torque by redesigning your exhaust without sacrificing anything, a lot can be gained by feeding them cooler air, and guess what? Most newer performance engines come with factory stainless headers and cold air intakes as-is. To be more in depth, modern ecm's are entirely self tuning to a point. If you don't freak them out by doing too much, they will correct themselves up to a certain point. Scotty, I appreciate your knowledge and experience, and enjoy watching. But man, dial back the fanaticism a little, I think it put some folks on the defensive.
Yes i agree at some point, the manufacturer has to deal with mass production costs and processes, goverment and environmental rules, etc, etc. And enthusiasts will modify their car for perfecting it, of course at extra costs, its a hobby. Would you share your car tuning knowledge and experience in your channel?
I have change my header and yes it perform better n more efficient for daily use. Modifying car isnt that terrifying.
But i still need more knowledge especially at exhaust design choice for my automatic transmission car
Amen!
-And in any case, a remap is small fry compared to the money people are paying for their upgrade components. A remap is cheaper than a complete carb resetting & tune-up was back in the day.
Step 1: install a turbo
Step 2: put on some headers
@@hcr32slider Step 1: over simplified a pretty tough challenge
Step 69: *Headers*
YES! Thank you! " To be more in depth, modern ecm's are entirely self tuning to a point." that part right there... I think he went kind of hard on people calling them "stupid" repeatedly and he can't even put factual information in his video. This is a narrow minded, biased video, that he was probably paid by the same people that said loud exhaust is "intimidating", to make. I think somebody should que The Rock at the end of this video...
A customer brings a Chrysler 2.7l Sebring to Scotty and asks what work should they get done on it.
Scotty pulls out a rocket launcher and blows up the heap of junk.
He won't have to do that to a 2.7 Chrysler it will do it to itself.
Thanks for making my day lol
That's the right thing to do...😎
So true! Whenever a customer calls me and says the have a sebring my response is always "I'm sorry"
Bahaha dude I nearly died from laughter great comment😂
It isn't always entirely about HP. Less exhaust back pressure will increase fuel economy, all else equal. It's not only about HP. Also equal length headers can decrease engine wear rate; if factory exhaust for each cylinder is not equal, it can put stress on certain cylinders moreso than others.
Generally I would agree with Scotty. Here is the exception. I have a 1964 Ford Pickup F250. Originally it had a cross over pipe. I bought a set of headers from LMC and installed duel pipes. I replaced the points with an electronic Igniter. I put a higher volt coil. I replaced the spark plugs with Autolite Platinum Plugs. I updated the 2 barrel to a 4 barrel Holly carburetor. I replaced the differential from a 410 ratio to a 373 ratio. And went from the original 3 on the tree to a 4 on the floor manual transmission with a granny gear for 1st. I replaced all the split rim wheels to regular wheels and just recently put 4 new Bridgestone tires from Costco. My next project is putting new Monroe shocks on when O'Reilly's. My Green Machine she drives like a dream.
Aren't headers like one of the first mods most people do. Like Cai, cat back, headers and tune. That's like the standard must do mods. Even people that dont race their cars do these UPGRADES
How about a nice set of road-grade radial tires, made by a reputable company? They get better fuel economy than Bias plies, they're a tad safer due to the internal belt structure, and they sure as hell look cool if you have the correct profile for your vehicle, as well as tasteful rims.
The TH-cam Phantom Official But aren’t they practically a death sentence in the rain?
@@Spaceman2484 Nah, my car has thirteen year old radials and it's just fine if you drive like you have some sense for one time in your life. Up hills in the rain is kind of sketchy, but usually feathering the hell out of the throttle keeps the tire (non-posi) from spinning. Besides, who cares about wet handling? A person with more than two brain cells and four minutes driving slows down when it's wet anyways. I drive the thing rain or shine and it does just fine. Hell, even in the winter it does fine. High idle slurps fuel like a uni kid slurps beer, but what are you gonna do?
True nobody races in the rain with brains...my first mod is always grip,suspension, brakes then engine
Like he said....back in the 50, 60,70's and 1980... yes - headers were a good thing. If you have an early muscle car - it might be a good thing to do, still!
But remember, most of those old engines were N/A - naturally aspirated, If you have a car with turbos or super chargers...the real horsepower comes from install a bigger power adder, now if you need headers to install the bigger turbo ... then why pay for the hears twice?
Listen to what Scotty said...headers - by themself - are wasted money on the "newer cars" ... meaning anything made after 1990'somethings - to 2000's... until you change some other "expensive" parts and upgrade the ECU...computers and change the program tune to match.
Note: the Internet was only getting started since 1995. There was not such thing as You tube. If you wanted to know "stuff" you had to read a book. If you could find one that was worth reading.
Fuel injection was still mechanical, there were no MAF, MAP no open source computer controls and no one was making the bigger injectors, fuel pumps or knew how to design return style fuel systems ... that came later, much later...much, much, later!
However, the old Foxbody mustangs were the beginning of factory installed tubular headers, which they put on the early 5.0 overhead valve engines. They were not full length headers - but they were tubular headers. The Japanese, and other smaller engines started putting them on their 4-cylinder cars - because they are cheaper to make. There ain't much "cheap" horsepower in newer car engines any more. Last I heard - figure about $35 - $40 (with newer cars, maybe even $80, $90 or $100) per horsepower is what it'll cost to hop up/modify newer engines. If you need someone else to install the parts "for you"...then figure shop time will start at $60 - $100+ per hour... based on where you live and what you need installed. If its dealer installed...bring your own grease... 'cause it'll be even more painful!
Newer engines don't leave a lot of "cheap" horsepower on the table any more. The best you can expect (from a 4-cylinder engine) is maybe an extra 5 or 10 horsepower, by changing headers, removing the cats and putting on a $500 - $1000 exhaust system. Now you can make a hella' lot more noise - but no mater what "they say", more noise is not equal to a bunch more horsepower... at least - not until you change other things too.
My dad gave me this speech years ago, now all my cars get headers and de-cated
God yall stoopid
Yeah but you have tune it after for better performance
@@DylanL69 Nope
@@user-ge2qn6gp4o yes on fuel injection you do if you don't it robs power I've done it before. The computer can only compensate for what parameters are programmed into the computer if it exceeds the parameters it will detune the engine
That's a real nice way to honor your Father -- NOT !! Removing those Cats tells us that you don't care if WE ALL choke on the air that you're polluting. FOAD !!
this video is true it throws off the main o2s air fuel ratio sensors due to more air. My 07 accord k24a8 took off the converter and later added headers it runs so well now stock tune. Deletwd evap and egr,pcv rubs phenomenal close to 45 mpg
My daily driver is a c10 350 cammed with vortec heads. Runs pretty good
*WHY NOT TO HAVE A CAR IN THE FIRST PLACE*
700 LBS RIPPED!!! Yes take the bus
it seems cheaper to me in the long run lol
WHAT DO YOU THINK ABOUT THAT DALE ?
@@LiquidSm0ke IM DOWN HERE SWEATING BUCKETS, WHILE YOU'RE IN YOUR COOKIE CUTTER CLIMATE CONTROLLED TRUCK.
700 LBS RIPPED!!! Dale is probably In his submarine!
Scotty I respect you, I love your videos. But I disagree with most of this video.
With these new electronically controlled engines fooling with the exhaust isn't the best of ideas. Not like the old days when you could play with your car and not screw up too bad... miss those days!
@@imxploring somewhat true; it isn't for the casual person who wants to throw on parts he/she likes the idea of. If someone is going to do it, don't half-step. Get any modification that alters the air/fuel ratio (i.e. more than a drop-in air filter) tuned properly.
@@imxploring only if it's tuned like he says in the description...
@@imxploring being one of the first things people do now is get a programmer and custom tune. all you have to do is let the tuner know what you changed and he will take your data logs and adjust it accordingly. now we get to laugh at YOU and scott for talking about something thats obviously out of your scope of knowledge
@@williambuttlicker9890 Not looking to argue about what can and can't be done on your car to increase performance. The real issue just comes down to how much cash you have to spend on increasing the power of your engine. For most of us (including the audience that these videos are geared towards... your backyard mechanic.... not a Nascar racing team) going into custom programming and high performance computer upgrades is far beyond what these videos are directed towards. The point made in this video is that simple mechanical bolt ons (headers) on modern cars is not a good idea. Of course if (like yourself) you have deep pockets and can afford all the other modifications and tuning that would then be required... sure... go for it. But with such resources and knowledge why would you start your project with a stock engine and start having to remove and replace part when you could be building your high performance engine from the ground up?
I got aftermarket headers on and its dope if anything it runs better then before.
Good thing in my state there arent any emissions testing laws 😉
next up "why you shouldn't put ice cream in your freezer"
That shits funny. Thanks for the laugh.
Lol
It will cost more electricity to the city, and your electric bill will go higher and higher. So don't buy ice cream, specially in summer.
By: Scotty
Hell man, it's cold already. How cold do you want it? Say you don't want to eat a half gallon at a time? Buy those single servings and when you want more, drive 60 miles to get another. Scotty logic.
Lol!!
Weird. Im suddenly in the mood to drive my straight piped v8 lol
Me two
Same
Isnt the ecu correcting for this? If you move from denver to miami, the modrn ecu adjusts for the change in air density. If the sensors are in the right place, and you dont mind a little extra noise, i dont see the problem.
so correct me if i'm wrong, but if i drive a '74 that's smog exempt and carbureted then this doesn't apply to my car?
I swear this guy lives down the street from me. I see him out yelling at his roses every day
where is this at, is he really in HTX??
@@P71ScrewHead the heat melted his brain
@@mr.motormaster9881 too funny..
The comments here got me dyyyiiiing 🤣🤣🤣🤣😂😂😂😂😂
Me too! From exhaust fumes, and leaking head gaskets! 🤮😂🤣
I work in a tuning shop and I can tell you the stage 1 is cams and headers( or for turbocharged cars down pipe ) they are the start point of tuning
How about equal length ceramic shorty headers on a 2002 f150 5.4 liter ?
I've already done a 2.5" flowmaster Cat-Back system, MagnaFlow high flow cats so would make sense to finish out with headers.. specifically
shorties because of fitment & useful range of HP and torque. Would likely do
1 3/4"
“People only do headers after they build a engine”
Subaru owners : hold my vape
Lol. Jesus....
Brooooo🤣🤣🤣
That’s every manufacturer. Simple bolt ons and a tune. It’s completely normal. I’m sort of perplexed by Scott’s take on this. In almost every case you end up with a car having improved drivability as well. Chill out Scott.
dissomeboolshiet how's your day yeah he’s definitely a little overboard thinking ab intakes and exhaust stuff but I think the ecu will balance everything just fine
Also Subaru owners: also hold my oil top up
Scotty the best blind mechanic on the planet!
Bought a catted UEL header for my BRZ just now, which will smooth out the torque dip. UEL's are better for low end power :)
Bought a brand-new Ford Cortina GT in '68 -- it had a butter-smooth 4-speed, Radial tires, Disc brakes, Weber carb, and a Long-Tube Header -- on the 1.6-Liter, 4-cylinder engine -- from the factory in England. I made a ram-air/ cold air intake for it, but never dyno'ed the results. I wrapped the header with asbestos cloth to keep the under-hood temperatures down, so as not to defeat my home-made CAI, which drew air from under the front bumper.
Five (5) trips cross-country from Philly to L.A. -- before we had all the freeways -- was a blast to drive, and I'd sure like to get my hands on another one !
That was my first and only vehicle with a factory-installed Header.
I installed a Long Tube Header on my '74 Toyota FJ-40, along with a re-ground Cam, Offenhauser Dual-Port Intake Manifold, modified Holley 4-bbl, Electronic distributor, HONE Overdrive, and open Glasspack Muffler.
In all, I have had good results and no problems with running headers -- BUT -- neither installation involved headers on BOTH SIDES of the engine compartment, such as with The 95 MERC's V-8 engine and crowded engine bay.
I would advise against putting Long-Tube Headers on our 2-ton Panthers -- As for Catalytic Converter removal -- it's illegal in all states, whether you have emissions testing or not -- and it's STUPID to think that you are not destroying the very air that we ALL need to breathe.
Scotty says; use your head, not your headers
Scotty, I put stainless steel shorty headers on my 1999 Chevy Tahoe 5 years ago and not one issue ever. Gas mpg went from 14mpg city to 17mpg and highway 19mpg to 24mpg. Power on top-end is way better. The cast iron Chevy manifolds are restrictive. The exhaust system was left the same.
What engine do you have on the Tahoe. And what brand of headers do you have. I have a 95 c1500 with shorties. Yet they are a pain just for the spark plug replacement.
I put short tubes on my 06 ion and now that you mention it, I have been getting better mpg
@@armandomendoza3167 I have a 96 c1500 .. i want to put some shorty headers as well, it's only a 4.3 v6 though. Do you recommend the headers or is it to much problems ??
I have a 5.3/2005 gmc, do I need a tune if I put shorty headers on my engine? Just bolt and go right?
Shorty headers are not really headers.
Properly sized headers- combined with a tune to reset the A/F ratio- will make your engine work more efficiently. The extent of the improvement depends on how restrictive the factory exhaust manifolds are. The factory generally uses poor flowing cast iron manifolds since both low cost and less maintenance. However, even Ford saw the gains headers provide and many 5.0 Mustangs have been factory equipped with stainless steel shorty headers, which haven't been problematic. Testing usually shows the most gains are from long tube headers due to better scavenging. Of course more benefit will be found if low restriction cats & mufflers complement the header upgrade.There are numerous youtube videos of dyno results supporting the benefit of exhaust upgrades. Don't understand Scotty's bias here.
THANK YOU AGAIN SCOTTY for the 411 about headers. The FIRST time that I put headers on any car was my 3rd car a 1964 VW Bug.but my 2nd Bug (1959). Then I put headers on my 1974 Fiat X1/9 it wasn't Fuel Injected. It possible didn't make TOO MUCH different but with 1300cc motor it doesn't hurt to lncreace the output even a little.😯😉😎
Next video:
Why tires are terrible for the road and costs money 😄
They made basicly indestructible tires out of hemp in the early 1900 but buried the patent because they would run for pretty much ever without wear; also google or youtube tom ogles 1970 galaxie he got killed and his patent buried as well
Scotty Kilmer here and today WHY NOT TO LIVE YOUR LIFE!
Youngbl33zy 😂
I put headers on my 2007 Nissan Armada when I got a quote of $7k (CND) plus installation to replace my cracked exhaust manifold. Headers installed by a custom exhaust shop was $3,500 (CND) including installation and an upgraded muffler.
I got my car full installed exhaust system with headers we call them extractors drives very great no problem at all
I don't need this kind of negativity in my life
What I am always wondering this man doesn’t have word of yes or do it always do not do not do not such a Negative person as you said
😂 LOLOL
Mine came with a log. Headers were the best thing ever. Now that we have efi the O2 AUTOMATICALLY readjusts it works even moreso on today's cars
But it's gotta be tuned or you lose power
@@DylanL69 long tube headers + tune= powahhhhh
@@stew-03 on injection you have to tell the computer you put headers on or it can't make power it will detune and start freaking out
One of the best mods on my camaro I did was install headers and dump a couple cats... oh and it still passes state inspection. BTW it was worth every penny.