Why Exhausts Make So Much Power😵| Explained Ep.27

As critical as this Exhaust Systems are, its the most overlooked, commonly just pieced together with no method of operation and it can be the difference between power being lost or gained depending on the application. In this day and age you have the ability to have it all, all the sound, all the performance and all the comfortability configured into one system and In this video we will reveal the truths and falsehoods, myths and methodologies behind building the perfect exhaust for your vehicle
J-Pipe Calculation: • Eliminate Exhaust Dron...
Music: By White Bat Audio
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Follow the build here:
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[@JwowSaechao]

This is my favorite part to upgrade on a Tesla

[@Dr.Mcstaby]

right next to the fire suppression system...

[@chnacr2]

Make sure to get the oil change done first

[@dominique21480]

I did a upgrade om my rimac as well😊

[@i23intheplace2b]

Nothing like an oil filter change for my Dell from hell.

[@Tyler_18_]

Don’t forget the air intake

[@beddietv6139]

As an Automobile Engineer myself. This channel is suppose to be recommended for Engineering Colleges because you can't get any material that simplifies as this channel. Shout out to this channel.

[@UltimateManTV]

Why multiply. 065 by 2?

[@jugobetrugo7213]

Damn it's amazing how much engineering knowledge goes into an exhaust system these days

[@camilosanchez831]

Ephesians 4:29 Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen.

[@blackhawk7r221]

@@camilosanchez831 Wise sage

[@maisydaisy9970]

@@camilosanchez831 "Do not let any "unwholesome talk" come out of your mouths" So how do you learn with out criticism? "but only what is helpful for building others up according to their needs, that it may benefit those who listen." That's a slippery slope don't you think?What if the their needs are not moral. Ephesians 29 Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers. Why change it, it's very clear this way. The devil is in the details.

[@agent_8169]

Everything in an engine is very, very complex. Intake manifolds, headers, catalytics, mufflers, etc.

[@Anarchy-Is-Liberty]

@@camilosanchez831 Jesus Christ, what a way to destroy a video!! WTF does your f_a_g/g/y religious beliefs have to do with a video like this? FFS SMH

[@nickb3968]

This guy's videos are always so well done....great channel.

[@zachgilmore7865]

Agreed! This guy's explanation, narration and graphics are second to none. Awesome!!

[@fobbitoperator3620]

This fellas channel is PRIMO!

[@337speed]

Thank you very much!

[@DrStrange1000]

Yes I was just thinking that. He really is brilliant. Nice clear voice, awesome explanation and animation 👌🏼

[@lpcook1]

I concur! His videos are excellent!

[@buckperformanceracing7648]

The amount of detailed information in these videos are amazing.

[@337speed]

I appreciate that!

[@BreakingoutthematrixBz]

Made your comment an AR

[@stevefrench3397]

Idk how he doesn't have a million followers. The videos are so well and cleanly explained with great visuals for dumbbies like me. Thanks for your hard work! Look forward to your next upload

[@337speed]

We are a secret club around here 🤫 lol

[@Tien1million]

Because just like in school nobody want to sit through an educational video, unless you're one of the few that actually want to learn.

[@miljororforsprakpartiet290]

saw furst video today. driveing 4 answer is the other chanel. but not many are nerds. we are busy building garage :P

[@jermainrmartinez4689]

I play his videos when my high school Auto Tech students reach Engine Performance I module at the end of the school year. Then we strap a vehicle down our Mustang Dyno as well

[@myrusEW]

Cuz it kinda meaningless for new people to learn. It’s all electrical now. Electromagnetic energy is universal, easily obtainable, and infinitely scalable. As we keep enhancing our infrastructure, engineering, and energy source research, we will have more and more sustainable and apparently infinite electrical energy, without any worry about scarcity, or emissions.

[@the_lyrical_woodsman]

Dude you're my hero for putting in sound comparisons with the exhaust mods and piping configs!!!! And choosing such pleasant beefy exhausts made me smile ear to ear

[@IvanDjuric300]

Never seen a better video on exhausts. So much to them. Never knew that.

[@Linkophere]

This is some history channel level quality here. Could easily be a show on TV. Extremely well done

[@jacquescrusan9500]

Quick short bullet point list for basic header fabrication (kinda): 1) forced induction builds: Based on metallurgical properties, Inconel is the best tubing to work with, but expensive and not as easy to weld correctly. High strength with low thickness, greatest resistance to high-temperature softening, and can handle structural integrity loads that T304 SS and Ti headers can't. 2) Collector convergent and divergent angle-of-attack: On both sides, the more gradual (closer to 0 degrees), the more powerful they are, at the cost of being less compact. Common convergent and divergent angles are as follows. Convergent: 12°, 15°, 20°, 25°. Divergent: 13°, 7°, 3°. 3) In engines that are 1) not even-firing (crossplane V8's, odd-firing V10's, 2009-current Yamaha R1), and 2) share a common intake manifold/plenum, the absolute best way to determine individual ideal primary header lengths is by comparing exhaust pressures between individual exhaust runners and comparing them as % of each other, starting with the highest. Highest pressure value primaries stay at pre-calculated length. All others get length reduced by same percentage as pressure (e.g. for ideal length of 38 inches, exhaust pressure of 92% max gets 92% total primary length, which is ~35 inches). 4) for engines such as V-twins with large firing order intevals, there are 2 priorities for consideration prior to fabrication: 1) Pressure percentage as listed above, and 2) firing interval (in degrees). Example: Ducati 90° V-twin firing order/interval is 270°-540°. Cylinder with 270° interval gets unchanged ideal primary length. Cylinder with 540° interval gets ((540÷270) X Ideal length), then adjusted for pressure percentage as stated above. If higher than cylinder 1, add percentage length. If lower, subtract percentage length.

[@maxboya]

Very well said, I really appreciate the time you took to write that down and or share that with us. Will need to copy and paste this comment to save this in my notes as I feel what you’ve explained is very helpful information to have. At least it can point people in the right direction when it comes to understanding it a little bit better.

[@jacquescrusan9500]

@@maxboya not my best work as I could have worded it better, but I guess it gets the point across.

[@tylerlawrence5404]

This channel consistently puts out great content. I don’t have any recommendations for new video content, I just wanted to give credit where it is due and thank you for producing such informative and quality content without losing the entertainment factor. Well done sir. This is my second favorite channel behind ole’ Cleeter.

[@nfr1702]

As a car lover and mechanical engineering student... damn i found my favourite channel on youtube. Thank you so much, i really appreciate your work!

[@user-vq7go9jt2j]

LET AN ENGINE BREATH

[@deadeyed373]

Just want to let you know that you're appreciated brother. This is top tier content, and always instant-watch when it shows up on my feed. Thank you for doing what you do!

[@NineEleven1]

one of the most detailed and comprehensive videos i've seen about exhaust systems. well done!

[@datgamerboy123]

Your videos are straight to the point, and give the viewer exactly what they came for! I love your videos! Keep it up!

[@danielbarazartemendoza6479]

i'm in the minute 6:42 and a had to stop to congratulate you because of your amazing work, really. I'm amazed of the quality of your video. congratulations nad thanks for letting me learn this old question i had for a long time

[@Bully904]

The best and most informative videos on engines on the Tube! Keep ‘em coming!🔥🔥

[@hollywoodcars007]

WOW! What an enormous amount of information in such a short video. Awesome! I had to stop in the middle and go back several times to pick up the information. Such professionalism in this video, I would have thought that this was a car show on television. I have seen a couple of your other videos but it was this one that made me subscribe to your channel. WOW!

[@craigrchee]

So thankful I stumbled across the channel, incredible content for us car enthusiasts. Been sharing this with all my car friends, I'm looking forward to seeing this channel at the top in the near future. Can't wait for the next video.

[@323performancex]

I used this video as a reference to set up my entire exhaust system The stock exhaust size was 1.75 Upgrades: Trd 7afe 4-2-1 headers Stock cat (I live in California) 2.5 exhaust piping after cat 2 bullet resonators for no drone And a Fujitsubo Legalis r muffler Sounds pleasant to the ears ❤

[@dannydefrancis2045]

This is one of the best exhaust videos Ive ever seen. You actually show how the different parts effect the sound. You have the math and examples right there for everyone to use and explained it very well! Please do a followup including how runner length effects savaging, and a little detail on how to achieve particular sounds like low rumble vs screaming. That is all thats missing from this being an extremely valuable tool for DIY guys to make godly exhaust systems.

[@chippyjohn1]

There was no maths, he just blurted out random numbers. If you think this makes sense and is accurate, you don't actually understand it.

[@kiuk_kiks]

*scavenging not savaging

[@tarikwasthere]

Love seeing the progress of your content. This is my favorite video yet! Excited to see what is coming next!

[@rocco.mbb.zoccoli]

Dude.. so clear so concise. Even if you already knew everything covered the edit is so choice it’s worth watching. Sharing with my friends now. Keep up the great work man.

[@barbarafleece377]

Once again, very well done with useful, helpful information. You are a treasure to the automotive enthusiast community! Keep the good videos coming dude!👍

[@estebanbello7861]

Dude!!! Haven’t watched your videos in forever and DAMN the quality is crazy on them! Such a massive knowledge dump you have to rewatch them just to catch everything. Love all the background content adding to what your saying, helps a lot with visualizing everything.

[@yianni3251]

Thank you for this video. This is by far the most informative and explanatory video I’ve seen on such information! The narration, background music, editing, and animation are perfect and make the video exceptionally easy to watch.

[@ragingbull94mtx]

Great video, thanks for sharing! In previous videos you've shown and in some cases discussed camshaft specifications. So I'm hoping you eventually do a video that goes in depth with camshafts: centerline, duration, overlap, lift etc. Thanks and keep up the great work!

[@R0cketRed]

Great video, keep covering topics. Next I'd love to see the intake side of this topic, basically how modifying just intake or exhaust or both effects performance and what are the best possible outcomes when adding a power adder like turbo or supercharger. ❤

[@nismoskys]

This is a superb production. Love the science, engineering, visuals (CAD and incredible renders), subtle bass sound effects, crisp narration, pace of content flow. Bravo. Way to bring it all together on a fun topic. Subscribing.

[@solomonpierce2676]

This dude makes amazingly in depth and well put together videos. Thanks bro

[@321ror]

Again another perfect video! Not sure if turbos have been addressed before on this channel but would be interesting to see the relationship between big turbos, gear ratios and overall output and driveability. Large turbines Vs small turbines and how it all feeds together.

[@BigCee955]

once again with the banger of a video ! Keep up the work bro we all support you

[@alexabney7913]

Never watched this channel before! I love the clean and concise writing and editing and the builders perspective of this video! Makes car modding feel learnable and approachable!

[@user-hg9yi8nv2i]

The amount of detailed information in these videos are amazing.. This guy's videos are always so well done....great channel..

[@leonlzh]

My car isn’t the only thing getting straight piped today

[@Baconbeater]

You’re bottoming?

[@ohar7237]

I have been doing this sort of thing (apparently, quite poorly) for nearly 35 years, and I had *never* heard of a J-pipe resonator. Having taken a class in the physics of acoustics *way* back in my undergrad years, it makes... enlightening amounts of sense. I thank you for this incredible contribution to my knowledge base, and I will undoubtedly be using this info on my next exhaust build. Like, it's *so obvious* I can't believe I'd never seen this before, as it seems like it has an incredible potential to reduce irritating sounds on a muscle-car cherry-bomb style exhaust. Mad props, my friend.

[@IsitReallyrealreally]

Mad ones

[@tstephens128]

2nd video I've watched from you, and I say, it is so very well put together, and to the point! I don't have time to listen to someone drone on and on at unrelated information. This is very refreshing! Thank-you! 😃

[@davidwickboldt712]

Dude you make some good stuff. Really nice starting point for getting people to look more in-depth on exhaust science.

[@soundseeker63]

Great video, I feel like I learned more in 10 minutes than I have in the last 10 years. Exhausts are a staple of the car community and I love how you can transform the sound, character and power delivery of an engine just bey changing the exhaust. It's just a shame so many modern stock systems sound so dull because of regulation. And of course they want to push us all into EVs eventually so I guess one day exhaust systems will just be a historic curiosity. It will be a sad day indeed when that happens!

[@valvetronic]

i see you used our Diagrams in your valved exhaust section! Fantastic video as always 🤘

[@PleeseCallMeDan]

I just found this channel and I'm so excited to watch all these videos! Thank you!

[@tehtehkhantengames8580]

Knew most of this, still watched every second. Extremely well put together and paced with tons of good information. Man I love cars lol.

[@victorstekhnovsky-slavsky5724]

The quality of the videos is just unbelievable. I wish they show these videos during Powertrain Engineering lectures. I also wanted to ask, could you maybe make a video on hydrogen ICEs by any chance?

[@nandansho.nandansho2366]

This Brotha is My go to for Technical, informative, Entertaining precise Data on All things Internal Combustion. He is indeed #1 in professionalism and graphical data on youtube..Thank you for gifting us your knowledge and expertise my brother.

[@georgew.5639]

This is the most comprehensive and accurate video I have ever seen on the subject of tuned exhaust. Tuned intake is very similar as it works on the same basis principle of pressure waves. Hot Rod magazine did a publication in the1960s on this topic along with the mathematical equations to calculate the best tube length.

[@billapostoleros6228]

Man this video has so much work on it, i just discovered your channel and I'm impressed, we need videos like that

[@michealmorris3766]

Great video, very informative, short, and to the point. I don't know if you did the animations or hired someone, but they were perfect to illustrate the mechanics.

[@337speed]

I do them all, that’s why these videos take so long to make😂

[@calebs.2166]

There is an intangible and indescribable sensation that the exhaust notes from a well-tuned internal combustion engine delivers to the driver. Let's find a way to keep that visceral car-driver engagement alive forever!

[@Audfile]

My humble 06 XRS with aftermarket everything is going nowhere as long as there is a pump.

[@theman3688]

More mainstream electric cars get, the bigger the batteries get, more pollution they give off making them less carbon neutral, less developed countries are not going electric anytime in the next 20-30 years and people don’t realize that’s a large population of our planet, they have to figure this fuel thing out because batteries is not it(it’s for people who have easy commutes and/or have a second car) meaning the vast majority are not going to be reaching the mileage for when they become carbon neutral… besides if there’s a natural disaster and you have to get out of dodge are you going with a gas vehicle or a battery?(gridlock traffic or electrical grid going down after the fact). No thank you!

[@Cooe.]

We need louder, and more sensory responsive EV motor + transmission systems to help replicate that effect. The original Tesla Roadster's totally real and LOUD (for an EV) space ship hyperdrive-esque sound it made when the trans & motors really got spun up is what ALL EV driver focused cars should aspire to!!! Silence is failure, and piped in fake noise is even WORSE!!! 🤮 A truly great sounding EV like said OG Tesla Roadster can have nearly as much auditory personality and character as a traditional ICE powered car, as unbelievable as that might sound to some. 🤷

[@Save_the_Stick_Shifts]

Or induction noise!

[@bigshorty4855]

Lfa, paganis, v12 lambos, etc, these are eargasms.

[@heclock]

Expertly made video. Great pace, great voice over, great info. Didn't know all this info this morning, now I do!

[@danielsigursson6215]

Great explanations and visuals combined. An absolute gem.

[@C-M-E]

These videos are so well done to the point that I normally have very little to add. In this instance, exhaust systems from the flange to the first bend is actually an amazing dark art all itself. The length of the runner and even the shape is perhaps the most critical areas to absolutely nail for absolute power gains when fine tuning for maximum performance, as going too far in both dimension and diameter can literally suck power out of the combustion chamber. The role of backpressure, most notably in NA engines, plays a critical role with valve timing in maximizing power made during the power stroke as well as retaining the gases In the combustion chamber for the most complete combustion. How the exhaust pulse travels plays a large role in this as well, as it is both a measurable difference through CFD computation, but also acoustically. One of the more interesting things is that a fabricated exhaust can look great aesthetically, sound decent, but the pulses can kill power through reflective resonance in combination with poorly optimized geometry. Some folks will put on a nice-looking exhaust without the forethought of what is really required to get the most performance gain regardless of price, as even name brand systems will get you something in the butt dyno, but are far from optimized designs. As said, it is its own dark art that takes the right hand to craft a system while also ticking all the right boxes.

[@edennard1]

Absolutely

[@platinumgrit]

bingo. I once spent an afternoon with a rtired F1 exhaust engineer, and it was absolutely incredible. Helmholz resonance, 'acoustic ports', super thin-wall inconel tubing, it's incredible how these things were dreamt up based on the mathematics they were playing around with. A lot of this was the development of WW2 aeronautical engineering. It's an incredible field.

[@sarahheetz5259]

This is one of my favorite KZbin channels. Thank you for sharing your knowledge and passion of/for automotives & engineering. How you explain each topic you make a video on truly is unmatched in my opinion. I'm surprised you don't have more followers honestly You're content is always 👌💯🧠💭💡🤌

[@AlexLTDLX]

Large diameter headers (particularly long tubes) generally do not make less torque than factory manifolds - in fact, in most applications, they add a huge amount of torque down low. I've seen this on the dyno countless times. Factory manifolds are almost never designed for scavenging - they're designed for durability, packaging and cost.

[@midnight347]

This. I have a gen3r 07 gt500. I was pushing 20 psi stock long block catless and borla stingers it did 725 rwhp 690 rwtq in 95 degree heat on drag radials. I did long tubes otherwise no other changes and it was 740 and 733 to the wheels at 19 psi. So it jumped 15 rwhp and 40 rwtq peak to peak and it was 15-25 rwhp throigh the entire curve and 30-40 tq through the whole curve it was like 40 down low so that's a pretty big difference for having already had a full exhaust prior to the headers this was JUST HEADERS. It was same tuner same shop same dyno similar conditions a year apart.

[@midnight347]

So not only did it pick up 15-25 rwhp throughout the curve and 30-40 rwtq its doing it at about 1 psi less boost which is very impressive. Again this was a car that already had a full free flowing exhaust other than headers. The sound is very noticable it was real good before its absolutely incredible now. The sound is insane. Sounds so nasty deep and throaty.

[@filipe.azevedo]

This is a gem of youtube. I like your presentation style and all the effort put into graphics design and soundtrack. Subscribed.

[@squatchbigfoot8577]

These videos are VERY well put together! Thank you for making them !

[@vroomvroom4061]

finally, somebody who shows the math for us to use as a rule of thumb

[@CranesMakeGains]

Diesels are a good example of the importance of good exhaust systems. Look at modern trucks with DPF filters and how horrible the reliability becomes. However, a straight pipe will allow all that exhaust gas and soot to escape and it’s like a completely different experience. It seems like a small upgrade, but I was told by a mechanic to think of it as not being able to fart and how it makes you feel inside vs letting loose and feeling good 😂 It’s essentially a better ability to breathe and flow

[@brendonfleetwood6069]

A good fart = a good breath. Just like an engine

[@DIXIEMAFIA251]

Great analogy!

[@soundseeker63]

Not just diesels. I'm sure modern gas engines sound and perform better without a cat, EGR and muffler etc. But ultimately all those emission and noise control measures are there for a reason. We did the whole engines with no emissions control for decades previously and know all too well what the results are and, while I do get why enthusiasts don't like them (DPFs etc) and I agree to an extent, I think it is probably for the best.

[@Badjoe117]

I can definitely agree that removing DPF could improve mechanical reliability and such. But the downside is decreased biological "reliability" of people's lungs so to speak. They didn't put them on there because "No fun allowed." after all.

[@dustins382]

Diesels possibly are more sensitive to exhaust systems because their inherently longer stroke means there's so much more volume of combusted air flowing. Which is why he mentioned larger pipes and probably why most diesels use 3"+ pipes. Then there's also the turbo issue which of course you want the optimal flow into that turbo, plus heat. Maybe 20 years ago I watched an episode of horsepower TV where they simply took a heat blanket and wrapped the exhaust side of the turbo to increase the heat. They added about 5-7 hp on the Dyno with a $25 part that took 15 min to install. Heat on the exhaust side for turbos is great. And cold on the intake side is great too, that's why my turbo Volvo runs so great in winter! Haha. The goal is to create as large of a difference in temperature between intake and exhaust side of that turbo, with as much flow on the turbo as possible.

[@cirilocruz8306]

These were the type of videos I was looking for, thank you 🙏

[@kelvinhuynh9834]

This channel is criminally underrated

[@ScottO84]

Masterfully done and extremely well-produced video.

[@Mighty131313]

Sending this to every auto shop class teacher I know. Steve Rinella just started talking about automotive science. Super impressed. Keep this up.

[@Southghost5997]

These animations are wild man! Helps to understand the concepts so much better.

[@xcentrixz2314]

this video was prepared phenomenally, everything down to the equations and language was well explained. All using cohesive speech and comprehensible terms. fire vid

[@JPRytmo]

Enjoyed the video very much. Great job, keep up the phenomenal work.

[@hunteraff5872]

Man, your the channel that explains back pressure in context with a video instead of just saying “pressure recycles backwards”

[@jimgordon3206]

Excellent. Informative and well presented. Thanks.

[@kworks9008]

Excellent video, stellar graphics and narration. Such a concise visual package that's clear and easy to understand. Great job!

[@TheRealProtagonistic]

This is the best explanation on automotive science I've EVER seen in my life. You're a genius!

[@dreamwork69]

Very well done video. Lots of information to take in. Definitely need to watch it multiple times.

[@pinkysgarage4517]

SUCH good content and commentary. I have enjoyed your videos before. Just became a new subscriber. All the information with no fluff or filler. Thank you!!

[@gto64]

Thank you so much for explaining these topics super clearly

[@NewsMoto]

337 SPEED makes the best KZbin titles! I’m on binge now!

[@kennethjanczak4900]

Great explanation and really interesting. Thanks for taking the time to make the video and share it.

[@kizashikaze9066]

I loved how your videos were before but my goodness, man, when you upped the quality....wow! Very educational as always, too!

[@George.___]

Excellent video and explanation of this seemingly simple yet quite complex subject, made interesting for the layman and enthusiasts alike!

[@mattmorrison6958]

Really great visuals to go along with the explanations behind it!

[@Ingris1441]

Great format. I really enjoyed it because i can do other stuff and listen. This was such a smooth vid i could still understand and pay attention to it while being pre occupied

[@Kowalski089]

Outstanding quality, great video

[@phosion]

Good video, id love to see more graphs and such with the comparisons of the different parts and medium effects. Thanks for the effort!

[@robertclymer6948]

Awesome content and very well presented. Thanks for sharing this little Gem with us. Appreciate your time and effort in making this. Cheers from Motown.

[@JordanPayneLV]

This is a great video, nice job!

[@bmodoryx]

Amazing video, super clear and good looking graphics. To the point, short and sweet, love it!

[@limitlessluis]

Thank you for this explanation!

[@captainclavicle]

Another sensational video! Interesting and informative. I learnt more about exhaust systems in those 12 mins than I have over years of my interest in cars! Thanks man, brilliant channel ❤️🤟

[@adamvita1334]

Excellent video, this is the deeper dive for info i like, keep up the great work

[@diamonddeuce2288]

Really love this channel and appreciate you making the vids you do man. Thank you.

[@wadeco9482]

Dude! What a quality video... Literally every aspect of it. Well done!

[@BrokeMahWallet]

The production quality is always on point my man 🔥🔥

[@justozzie1072]

It's the first time I ever see one of your videos and bro, you got all respect because you went into all minor details of every engineering behind exhaust system and I totally appreciate your effort.

[@sigxm5thumb]

This dude is so cool I just had the privilege of meeting him today and he’s super cool and easy to hold a conversation with and I absolutely love his bronco build clean and simple

[@bytornsnowdog1347]

This video is awesome! I learned a lot.

[@lpz123]

and just like that Im loving car builds again. Thanks for all the knowledge!

[@veegee1974]

This was so dope! Thanks for all of your hard work. I'm definitely subscribing.

[@greg.gonzales]

This was a great video! Thanks!

[@tomstamatakos8027]

This is the best video on exhaust technology I've ever seen. Hats off to you Sir, great job & thank you!!

[@StarSpliter]

What an awesome video. I'm new to cars but have a CS background. I love seeing all these engineering concepts culminate in just one product. Cars and engines especially are mesmerizing.

[@fakiirification]

im blown away by the production value. this is a top notch educational video that should be shown in schools. holy crap!

[@xmlisnotaprotocol]

Your videos are amazing in production quality, technical content and asthetics!

[@calebcritcher8537]

Gotta be one of the best videos on exhaust I've ever seen.