Can't wait for all the experts to come out from the woodwork who "know better" Good job FMU very informative.

OJ, no exhaust sounds in the exhaust video? Come on man, give us the eargasms we all need!

I would love to see a before/after compilation of your megaphones

Wow, now that's knowledge about exhaust building.

39K subscribers? REALLY!?!?! Tell all of your gear head friends to checkout this channel. Ojay is a badass. I wish I had a shop like this near me.

Biggest frustration? Trying to get long tube headers & exhaust for a naturally aspirated, high revving, VG30DE in a Nissan 300ZX (Z32). Well done.

Would love to see your guys take on one of the popular 4 cylinders such as B series. Very keen to see how your design ethic would change how they sound.

Great content. OJ the way you speak clearly, calmly, and confidently, you’re a natural for this platform. We are all lucky to have you and your knowledgeable team.

OJ, you really knocked this one out of the park. Straight to the point, easy to understand, and gave very valuable insight into how the exhaust system should be crafted.

Your exhaust work looks amazing 👌😎

First time seeing this chanel. Definitely earned a sub! I love how clear and concise your points are, no beating around the bush, no pulling punches. KZfaq is in sore lack of this quality of content.

I picked up an n55 m235i and the previous owner put a v**f race exhaust on with a dinan performance midpipe. The system is lightweight and functional, but i knew that it wasn't meant for me long term and have actively begun searching on how or what I am going to fix/revise this. The tone and drone could have vastly been improved with tuned resonator, taking away that annoyance between 2700 and 3300 rpm. At some point in life, Id love to meet both you and alex from lsc, but more importantly, since im in the midwest as well, sometime have your team guide or build a way better "performance daily driver" exhaust. I love nice exhaust, but theres a difference between purpose volume and just loud and crass. Keep up the good work, hopefully a future client someday.

Awesome video, OJ! The exhaust topic is a tricky subject, and oftentimes was regarded as sorcery and black magic in realms of old....😂 Your exhaust "code" is very, pardon the pun, sound. [Dad jokes anyone?] There are so many rabbit holes on the subject that you can dive into, and it would be neat if you untangled some of those in future videos. I loved your magephone segment a few weeks ago! I am currently building a radical custom exhaust from alpina type headers back on a BMW e53 X5 I6 (rare manual transmission) with some really cool hat tricks and some modular sections for experimental sound tuning. Rabbit holes. Everywhere. 😂 Love the channel, man!

Thanks for the great videos lately.

Great video. Tons of relevant information packed into a relatively short video.

Very informative content. Thank you for sharing.

Another great video Professor OJ, and I'm staying tuned for more 😂

Another great video! Thank you for the explanations.

I wanna get this exhaust system been hearing your work 👍 love it

You guys really hit a home run with this one. Excellent video filled with information that is presented in such a way that makes it very easy to understand

Seriously thank you so much! This is the most informative video on exhaust I've ever seen. Wish I could get an exhaust system from you guys but I live all the way out in California. Keep the videos coming!

Masters of their craft. The exhaust work y’all do is amazing. When I boost my car I would love to get a custom mid pipe from y’all. Nothing seems to pair well with my ppe headers.

Absolutely love the professional way you presented information! You guys seem like an awesome business and I hope you are extremely successful

Biggest frustration- paying top dollar for Hooker Aero chamber DUAL 3" in 3" out muffler just to find out it necks down to a SINGLE 2" inside😢

Definitely worth the trip from CA after watching this. Hard to find good people who know what they're doing.

Great content, keep it up!

Perfect!!! I have an old 350Z that needs some exhaust help 👍

New to your channel and very happy to find experts in the field. I will be coming to you guys for my next build. Thankfully not too far away in Ohio LOL. What has been your experience with Venturi pipes? Many years ago, I had a 2007 Mitsubishi eclipse GT with a 3.8 l V6. I built a custom exhaust four times to get it right. Unfortunately it was the year before they switched to a dual exhaust design so an x-pipe wasn't in the cards. In the final build, it was the Venturi pipe that got me over the 300 WHP mark. I was pretty happy getting from 263 BHP to 300 WHP and still being NA. I am glad I stopped there because was starting to follow this wild Russian guy who frankensteined the Evo AWD system into his 4th Gen eclipse and went forced induction. My fabrication skills aren't that good lmao. Neither was the $10K price tab to pull that off.

Thank you for some good information. Liked and subscribed.

Great content man. Discovered the channel a week ago. I live in Europe and in a near future thought of ordering an Exhaust from FMU for my GTI. I understand it's not perfect as would be better to have the car in the shop. Unfortunately I can't. There's a lot of stuff on the market but sounding thin can plus questionable performance when that gets into the dyno.

The quality of content and knowledge on this channel is unmatched. Also, IMO critical when working with metals that expand due to heat, especially stainless, invest in ADJUSTABLE MEASURABLE torque wrenches & use the proper thread liquid (if/when needed, such as anti-seize or threadLocker) Torque bolts AT spec (not over, not under), in a cross-bolt pattern. Great stuff 👍

Great one OJ!

great vid!!! Thank you

Very useful. Subscribed

Another banger of a video. Damn you guys do a great job putting these together. Been following you guys for many years. Would love to connect someday. 🤙

Great video! Really well presented and informative. You have a new subscriber!

Where this is most apparent is the VG30DETT Nissan. I love them, but the exhaust note is awful with an H-pipe and way more smooth and exotic with an X-pipe. Awesome video, thanks for sharing your experience. This is for real performance enthusiasts.

OJ, good job. I also have a E39M5 ready to be sent your way for much needed love from you after full engine, transmission, rear diff and suspension rebuild. Just say the world and I’ll send it from the Big apple. Good luck with the Chanel.

Loving the content OJ! Very informative and well made. Here’s my situation I’d love for you to weigh in on: I have an e46 M3, which is notoriously raspy. I’d love to smooth out the exhaust sound, and deepen the tone if possible. Thoughts?

I have an 06 charger R/T 5.7 hemi and am running solo performance 3” stainless steel no mufflers no resonators but have J pipes and sounds great

This knowledge is great! Plus it makes sense if you're lucky enough to have a shop near you to get it done. Around where I live the guys lol at you like your speaking Martian or something.

Love it! 👍

Honestly a really great vid! Would like to see a video on inline engines (I3, I4, I5, I6). I think those are the hardest to get sounding really great.

Previous owner have changed the exhaust and overtighten all U-bolts so the exhaust leaks a bit. Just waiting on my new header so I can put in a anti backflow piece and make the rest of the system silent and non leaking.

Then there is me... Putting tri Ys on an F150 bringing the 2.25 pipes to a Y and 3" the rest of the way out. In the meantime, length matching the 2 sections so the pulses aren't stacking in the single section. Not all of us are doing exhaust in good taste we just want it to taste good.

Would love to see you talk about: 1. Four cylinder exhaust optimization (NA and turbo) 2. Ovalized exhaust tubing for low cars (yea or nay)

This viddie struck a chord with me indeed. I just sent your shop an email on it. 👍 I do believe this would be a new, unique challenge for you all as well.

I wanna see what magic you can do with a 2.7 or 3.5 ecoboost f150 exhaust.

Fantastic video! I'm local to you guys and have been considering inquiring with you guys about a catback system for my 2014 Cayman S. The current system now sounds great up top but during normal driving drones so bad.

Alex brought me here. I was just researching after market exhaust for the Mustang.

The titanium thing bus interesting. The Engineering Explained channel tried titanium on his s2000. The sound quality compared to SS wasn't much. He pretty much has the same opinion as you. Just subbed and commenting for algo's. I used Vibrant for the first time on my current car. After a muffler delete, my gf hated the drone, she had to yell in the car just to talk. I put in a vibrant and now both the car and my gf sound better 👍

I have been trying to decide what muffler(s) to use on my car. So I have been researching especially since I am on a tight budget. One thing most people don’t consider is as the exhaust gases travel through the system it cools and shrinks. I used to wonder why the interior volume of the exhaust pipes were smaller after the headers. But came to that conclusion.Thanks for your information. Watched the megaphone video also.

OJ, that’s a pretty distinct Chicago accent you got there. lol I have a C7 Corvette with a Procharger. My car does NOT have the NPP muffler. I’ve wanted to upgrade to a Corsa NPP system and was interested in your opinion.

Subscribed

Solid work as is the standard for FMU. Only disagreement is the X-pipe recommendation. For any large displacement V-8, true dual, equal length exhaust is the best sound. The rough, guttural roar is the brutal cacophony that makes other engines hide.

I'd love for you guys to do a custom header and exhaust setup on my Fox Mustang with a 351W swap. The math says I'm supposed to have 1-7/8" headers, but finding a set that fits with engine crossmember is...interesting. Which means I'm more or less stuck with cheapo 1-3/4" BBK stuff. Blech. But I don't have that LSC money, lol.

Loved your thoughts on the different materials. Would like to know your position on Inconel. Love the vids

Corsa extreme double X pipe is in my opinion the best sounding out there, which is what I have on my Roush stage3 supercharged car. And it has no drone at all. On my NA 2019 Mustang (wife’s) has the AWE track edition on it. Drones a little and has a deep tone.

Thanks for the video. What do you think of single mid pipes on BMW straight 6's vs the X pipe setup?

GT350 sound clip please!!

I can't wait to dig into my ATS-V. The Borla system is awesome, but the LF4 has notes that remind me of a Porsche, but the Borla doesn't promote it.

I have a 750-800 whp 15 sti I have a 3 inch awe track exhaust on there now I like the loudness off it but want to see what else is out there and what size I should need for it also Has to be a quad tip no muffler

I just finished my first full stainless with the right welding wire and gas this time. Ugly but functional welds. I had to use pie cuts to find different angles in 3 spot. I found myself using tape to hold them in place then peeled some back to tack. I noticed any angle cut pieces elongates the hole size and doesnt match exactly. Had to cut apart one section after it moved an inch off. Found welding my way back was better. Learnd cheap v bands are trash. Learnd v bands warp and need to be filed flatt. Came out okay. Made my own x pipe out of 45° to keep a low angle and didnt over cut the middle to cause a pinch point.

What’s your opinion on Motordyne products like the Advanced Resonance Tuning test pipes aka (Art Pipes) and Schockwave TDX2 for Nissan/Infiniti? They use Helmholtz resonators to cancel out any rasp and drone. Power and sound are amazing. It sounds very similar to a GT-R. The piping is almost identical to what’s on this R35.

how about a decent 3.5 ecoboost sounding exhaust? Would love to see that from you guys!

My question has always been where to place the mufflers and megaphones throughout the system. How does the position of these change the tone of the exhaust? Is it better to have megaphones at the beginning of the system, in the middle or at the end? How does the length of the megaphones affect the performance and sound? Is it better to have mufflers at the end of the exhaust system or in the middle? It would be great to know that information with the help of your experience. Great video!

Man, I’m about to drive up and have ya make me an exhaust for my GR Corolla. I bet you could really make that boosted 3cyl sound more unique

Would love your thoughts on spintech mufflers. They're kinda like chambered mufflers but use perforated spirals instead. Had them on an monaro (gto) with an LS1, dumped at the diff and my god that sounded incredible.

thoughts on exhaust wrap next? i have long tube headers im waiting to throw on my 06 gto

absolutely sir! just subbed and liked. Curious, I have a new catback I installed, the flanges do leak and are known for it. Would it be bad thing to have someone cut and weld so I can change to vband? I have a Greddy Evolution GT for my 370z... very pretty, love the sound....terrrrrrible sealing ability on all flanges.

my 1982 Chevy S-10 has a 6.0 liter V8 with long tube headers, 3 inch collectors that connect to dual 3 inch pipes with Flowmaster 50's. It sounds good but it's too loud. I don't have an X pipe. the mufflers have a center in and offset out and that's how I get the exhaust over my rear end. I have some ideas but I would like to know what you would suggest.

Better sounding exhaust for subaru cvt since the 2.4 turbo is going into a few vehicles now but still livable because of drone

I want a quiet and good flowing, i know i have to compromise but i don't think straight through mufflers will make my exhaust quiet enough

I would like to see a high flowing exhaust that sounds as quiet as stock on a fox body mustnag. My current exhaust that I have use a couple of Dynomax VT mufflers that do a great job in getting rid of drone, and that's with a magnaflow high flow catted system. Is it possible to have a non-catted system, that flows without being much louder than a stock system....

One question I have is how does changing the shape of a pipe, for example to oval pipe affect performance and sound? Does it have much of an effect or is it just a little more difficult to work with?

The Audi 3.0T supercharged engine is known in the Audi community to be difficult to make sound good once you throw test pipes in the mix. I’m curious as to what you’d do to get it to sound awesome not only at WOT but also at low throttle city driving with a full custom setup from the header back. All my 3.0t friends and customers who run test pipes either have something custom to combat the ugly rasp, volume and/or pitch as there really isn’t a system out there on the market people are 100% happy with….

Was hoping in hearing a sound cloud of that. I wonder how these megaphones would sound on a 5th gen Camaro through a Corsa Sport Exhaust .

I Hope We are Listening People Solid Firm Advice Here As for the Experts Oj is Fully aware and in the Know. I Have worked in various automotive industry Right up to F1 Level. So when i say Oj Knows His Shit ,,I mean it... Legend content from oj & Alex . FMU/LSC Legends ... 😐

Ugh i wish you guys were closer I would of taken ny ISF to you guys to make me a catback 😢

Great, informative video. What would your recommendation be for my 1986 Camaro that I'm V8 swapping right now? I'd like as little rapping and popping on decel as possible but still a great sound. Unfortunately, I am nowhere near your shop as I am in Saskatchewan, Canada.

Fred Armisen never misses 😮‍💨

What if you have a civic and a two 90 degree bends? Where along would you place a vibrant resonator to help reduce drone best?

opinions on adding valves onto an exhaust, specifically after the cat before the res?

Midway during this video I realize there was a additional option for the custom exhaust. I couldn’t imagine my E39 M5 could sound any better? It is #Epic. What your thoughts on that upgraded stainless steel you mentioned. And curious to understand the benefits or downsides to upgrading the intake runners to replicate Gold Wheels engine platform. My understanding is taking the air from the plenum gives it that Instant throttle response that you just can’t get otherwise.

@fluid motorunion what are your thoughts on two mufflers vs one? I have a BMW X5, single turbo with full bolt-ons... planning to install either a pair or a single Valvetronic muffler. I'm assuming there's going to be a significant difference in sound between the two but I'm interested in the choice that would have higher flow/hp.

So what’s the opinion on ovular cross-sections for pipes? I’ve always figured the flow is roughly the same as long as the internal volume is the same as a circular pipe. The only variation I can think of is bending along the long axis of the oval or the short axis leading to different amounts of air friction. Would love to hear more about this since I’m trying to custom fab a flatter exhaust header by using ovals instead of circles!

What do you think about celeritech exhaust for corvette to make it sound like a ferrari they used megaphones and stuff in the design it sounds crazy

So what about a vr6? Should I use an x pipe first and then merge into a y pipe or straight into a y pipe like the factory did?

Great advise as always. What are your thoughts and recommendations about adding a valve system to an exhaust?

Truly great video, and listen a business guy I know your slammed busy, ..with that I am a true 45 yr old enthusiast, looking for some help with different vehicles.. currently audi s5

Nice! Any systems for an Audi MK1 TT?

How to measure Drone and eliminate it 🎉🎉 it is the most common problem in nearly all aftermarket systems.

What wall thickness do you recommend for 304?

I injoy this video

Hey OJ, Im curious; is there a rule of thumb that the exhaust should step up in diameter or step down in diameter as you progress from the collector to tailpipe? I'd always grown up hearing the old school train of thought that as the exhaust gasses cool they take up less space so you step down the pipe in size to speed up velocity which kind of made sense at the time but i have recently heard people reccomend stepping up in diameter for optimum performance.

OJ is there a good way or best way to do a straight pipe? Not just the content from this video but things that may need to be considered to combat not having a muffler/resonator

Have you guys tested flow on any of the Black Widow mufflers?

I have a 2014 Mustang GT with offroad X pipe(cat delete) resonator delete and corsa sports. I hate how blatty it is on normal driving. But love the way it sounds at wide open throttle. How do i give it a smoother sound for normal driving so its not so blatty?

What do you do for AWD Escalade?

Nice! I have an 07 Ridgeline and the muffler is getting a rust spot, what muffler would make the V6 sound good without sounding like a fart can?