Don’t delete a resonator or muffler till seeing THIS Detailed Mercedes Benz AMG Turbo exhaust build!

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[@rotatingringbelt]

Dude, how many different color glasses do you have? 😂

[@joshm9163]

“yes”

[@FluidMotorUnion]

If you’re good at paying attention this hint will give you an idea of how many days it to to film- I switch my frames daily.

[@steveallam]

​@@FluidMotorUnion you are a true artist with a tuned ear everything you do is golden! I love it from one artist to another my brother from another mother. Never change! You rock hard core 😎...

[@carribeanprince8359]

They are smart glasses.. they come in many colors!!!

[@hannahkeith1860]

Your glasses are fly 🤌🏻

[@tauraiz2927]

As a former AMG owner, it’s cost effective more than anything. I’m not dropping 3k on an exhaust when all I want is some more audible notes I can get done w a resonator delete for $300.

[@Chris-hw4mq]

An FI exhaust can run you to 9k which is crazy

[@earz1121]

Exactly. I did that to my ML63

[@pierre-davidmoreau]

I own a cls55 amg and if that was the results i would ask to return to before this sounds stock 🤢 what is the point of making a custom exhaust and it’s sounding stock lmao 🤣

[@dennischo5465]

As a owner of a 2016 AMG, I thought the be4 sounded better than the after.

[@kudynski]

@@pierre-davidmoreau to be fair. I don’t think it sounds stock if you were there live. These microphones are so limiting. I’m sure of it. And to be honest, the first exhaust sounds very “farty” and seems unrefined. I don’t think this guy would do this much of work and be this confident if you didn’t know what he was talking about. I wish he did a back to back sound test and maybe also loudness test.

[@philbarbera1471]

Sounds perfect. No drone, no crackle/pop, and quiet until under load. Deep bass…Perfect. My 427tt car is there now, please duplicate.

[@YoungAbe1993]

Definitely sounds more “refined” but for the money I’d probably go with the first setup. I’m sure you guys charge a lot for the work you do. It’s beautiful work btw.

[@shawncarson8131]

Man, so many people in here don’t understand what a good sounding exhaust system actually entails. There’s a hell of a lot more to it than just volume. If you want to blow your eardrums out, piss off your neighbors, and sound like a dump truck, then that’s your choice, but when it’s done right, you have a certain elegance that’s pleasing to the ear and is just as easy to live with like the stock system.

[@Skate2heaven]

should be able to hear those turbos tho, best part of the car.

[@abdullmajeedalalawi8355]

That's sounds like stock , it's clean but not entertaining a amg owner at all , sounds like CLS500 😅 , for me I don't like how it's sounds

[@shawncarson8131]

@ meh. There’s more to an exhaust system than just volume. Just because it’s loud doesn’t mean it sounds good.

[@papapetad]

You just have to look at music trends to figure out how the general population gets its ears calibrated. Choice of aftermarket wheels says a lot about sense of aesthetics as well.

[@MJPilote]

Super clean, absolutely zero rasp in that note! I’m impressed!

[@Timur4593]

Sounds more refined but before sounds better. M157 sounds hella good, all you need is a cat delete and res replaced with a H-pipe. Sounds crazy when engaging launch control.

[@giraffewithtattoos2770]

I like this guy. Voice, cadence, and even the technical explanation like Stumpynubs is for woodworking. They both know their craft, too.

[@princesrmichael1967]

I prefer the before sound!

[@terrywhitlow2744]

Agreed all that talk about sounds and it sounded better before he touched it 😂

[@0-60STYLE]

@@princesrmichael1967 yeah I'm sure you have a preference listening to it on your flip phone speaker 🤣🤣 how can you even tell what sounds better if you don't hear it in person

[@terrywhitlow2744]

@@0-60STYLE the same way you compare the after sound neither is in person …now get dudes sausage out your ear hole 🕳️ damn car sounds stock nothing special 🙄

[@0-60STYLE]

@@terrywhitlow2744 terry you're being a negative Nancy Terry cut it out pal

[@JViello]

It's more "raw" "dirty" and "blatty" with the before. On a Mustang, yes...on a Merc? No. He smoothed the sound out nicely and most likely gave a more pleasant sound inside as well. It can also pass emissions now too, more than a minor issue.

[@morehas1n343]

You gotta have the ear to be a connoisseur when it comes to exhaust notes. Clean and crisp with the rumbles of a lion, amazing job. 🔥

[@FluidMotorUnion]

It was the perfect blend of sound and power.

[@PolyGerman43]

New sound so more refined and worth the money.

[@hassanmahroof455]

Definitely a difference of opinion, I also believe that the mic you guys are currently using doesn’t capture the depth of the deeper tones that are coming off it. The first one sounds more aggressive sure but I think much more higher pitched and raspy. What seems to be the case here is you have a much more deeper sounding engine but quite frankly I think your mic setup is set for catching higher pitched slash vocals as opposed to catching the sound of something which is so bassy. Try changing up the mic that you use to capture sound from the mic.

[@JViello]

Having built my fair share of systems on mostly turbo cars, and also being a former audio competitor back in the 90's I've also played with helmholtz resonators etc...even did a dual inlet/outlet muffler that looped back into itself once on a custom truck with surprising results on drone control...what it sounds like to me here, is you removed a lot of the "blat" and the cats definitely smoothed out the sound and removed some higher frequency spikes. Overly long and large diameter exhausts tend to get blatty in a hollow sewer pipe way (Think V8 diesel truck with 5 inch pipe. Blah!) Too small can also have that effect but it's more "farty"...That old school glass pack sound on steroids. It's what every freaking Coyote Mustang seems to suffer from these days...makes me cringe. With this one you definitely smoothed and cleaned up the sound. Nice work. PS. One thing I've had better "sound" and success with this going with 45* bends to make my X pipes not 90's or 180's merged like I see in this exhaust. Much less turbulence. It always for me, gave it that more hollow "racey" sound. (Think C5+ vette sound.)

[@thomasharris5151]

Before: sounds raw & raspy/tinny. After: sounds deeper & polished/clean But both sound better than the stock exhaust that sounds good too.

[@richardhust3184]

This after your work is truly a masterpiece!!!! Amazing sound🎉

[@FluidMotorUnion]

That means a lot, thanks for watching

[@v1510nman]

i just love how you guys put heart and soul to doing it rather then just do it bcoz cistomer said so

[@FluidMotorUnion]

Thanks, that make us feel warm and fuzzy inside!

[@stanmack1]

Both sound great, but I think I like the after a little better. The deeper and fuller note. More AMG.

[@coquicycles3502]

You guys do some great work and it sounds amazing after the exhaust mod. It’s cleaner and more sophisticated and refined while still maintaining the natural growl when you kick in the Power. Sleepers are my favorite and that’s what you captured.

[@FluidMotorUnion]

Thanks! Glad you liked the sound!

[@WilliamBurdine]

Sounds amazing.... best AMG63 I have heard yet.... just sounds like a powerful car... the passes sound much better!

[@Immortalized4evr]

Before sounds more like your everyday domestic V8, the after is a more refined yet aggressive Mercedes.

[@96t5wagon]

The new setup sounds sooo much better. If you notice at the end during the comparison, it’s that final sound at the top of the rev range that’s very unclean…that’s totally gone in the new setup and yet the new setup doesn’t lose any of the aggressive tone. But like with most things like this, it’s subjective 😂 Nicely done FMU 👍

[@FluidMotorUnion]

Thanks so much

[@haramaschabrasir8662]

That's a "conservative aggressiveness" that definitely fits to an old school AMG. I appreciate that there are no flashy pops and bangs, just the occasional burble when letting off the gas.

[@viccao8431]

Great video, wish more shops give this much attention to detail and have this much knowledge. Also that dude is yolked lol

[@FluidMotorUnion]

Glad you enjoyed it! And yeah, that’s just his natural physique…

[@charliegivilancz6412]

Love the depth of the new setup. No bad harmonics at all. I HATE the idiots out there that have a tinny rattling sound in the higher frequency range. Great Job.

[@96t5wagon]

That’s exactly what I noticed too. Right at the top it got extremely unclean. The new setup was clean throughout the rev range. Chefs kiss

[@gentleg5182]

it almost sounds stock. before was better.

[@terrywhitlow2744]

💯 facts these other guys are confused 🌈🙄

[@KemetriusGreen]

Popeye with the mustache and ❤glasses did a whole lot of nothing before was better 😂

[@Disinformatoons]

Yeh dude does not know what AMG cars should sound like if this is what he does to a 63. Unreal…lol definitely botched that fr.

[@acquiredtaste5446]

You mfs the type to like straight piped coyotes🤣 after sounds miles better.

[@gp3yt]

Fantastic outcome... appreciate the detailed discussion and section by section approach

[@Rebel_Stone]

I used to work for a Benz dealer and honestly if u buy a amg the last thing u need to modify is their factory exhaust system it’s already pretty aggressive and now most amg have active exhaust valves

[@FluidMotorUnion]

we beg to differ lol

[@Rebel_Stone]

@ I feel you but u cannot tell me that the 2012 c63 amg didn’t have a aggressive factory sound

[@imortal069]

definitely sounds better, more classy, more distinguished.

[@FluidMotorUnion]

Thanks!

[@LosPollosHermanosTV]

if you want to sound “classy” you don’t buy a cls 63 🤦🏿 it’s pointless to take away the aggressive sounding notes from this car if you want classy go buy s class with stock set up

[@wms2572]

That sounds a lot more deeper, got rid of the crackle too. Sounds great.

[@FluidMotorUnion]

Glad you liked the sound!

[@JMonty215]

Sounds beautiful 🔥🔥💪🏽 the customer needs to tune the car going to sound even better

[@vincentlamoureux8446]

Omg that sounds amazing. I can hear the v8 growling and the turbo spooling

[@ThMon]

Guy know what he’s doing in he’s shop 👍

[@LVLOfAudacity]

I like the popping. Too clean is just too clean in my opinion. The workmanship skill and craft is outstanding. Gimme the dirty sounds though

[@burcoiu]

Sound like a 💪 car,100% different and that grow sound is gorgeous

[@papapetad]

Definitely sounds better after. Deep, smooth rumble with the obnoxious brap dialled right out. Still has the occasional crack in it for bonus character edge.

[@mytriton54]

I know Mercedes wanted to add a little bit of raucousness to the AMG however, this sound is absolutely wonderful. Beautifully refined and aggressive for a luxury vehicle. I have long since outgrown my loud muffler phase. This is how I want my Mercedes V8 to sound.

[@FluidMotorUnion]

It’s about that perfect blend of refinement and performance.

[@mytriton54]

EXACTLY!​@@FluidMotorUnion

[@burcoiu]

100% sound good, better like before, much better

[@keithbrumagin4234]

I really like it guys, sounds aggressive in a luxurious way…

[@Keenlive360]

I like the clean sound.

[@burbanmudder]

Man that thing sounds beast!😮

[@MultiWesos]

NGL Mercedes V8 are ones if not the best sounding V8 out there. Personally I'll just leave it stock, the sound is amazing from factory.

[@nickskolsky2560]

Excellent fabrication by Cody … great job guys 👌🏼

[@FluidMotorUnion]

Thanks

[@miketoney1660]

soooo nice, way more better, perfect.

[@givenlife706]

The exhaust sounds way cleaner doesn't need to sound like a pop tune if it doesn't have a pop tune

[@markwilliams2186]

Yes after sounds better. 🔥🔥🔥👏👏👏👏

[@franticRX7]

Sounds like a G63. I LOVE IT❤

[@Magnacardia]

Definitely sounded more refined after. But I feel like that what it sounded stock

[@Gottcha212]

That’s something quality looking work! Sounds great!

[@FluidMotorUnion]

Thanks for noticing!

[@altink8823]

Awesome work

[@technicallyeco.2751]

Definitely more quality sound

[@tonyj5408]

good job , she sounds like a champ

[@livelong6685]

when he say UNCLEAN he means rowdy and manly, they basically made an exhaust system for old senior citizen with chronic migraine issue

[@AkinsSemiAndMobileServicesLLC]

Channel is awesome how in depth you go with the work you performe

[@tarvomolder4977]

Well done content! Thumbs up!

[@lawrenceh.7011]

O.J., it sounds way better, much more refined and deeper. It sounds richer and more quality. I'm curious, do you ever compare before and after on the Dyno? How much better (measured) flow did your redesign provide? The quality of the work is fantastic and gorgeous! I suspect that some won't hear the improvements because their ear isn't trained like yours. I encountered the same type issue when I used to design high end car audio sound systems ($5k +). It can take time to train an ear to hear the real differences and improvements and attribute the different sounds to what's happening.

[@Akumorod]

You are the best OJ

[@natrlhigh]

I love the sound of the finished exhaust, I just wish it had a little bit more volume...

[@CleanerCars]

Sounds phenomenal to me. I need to find a shop in NC that can do something like this.

[@SoCal-AMG]

Sounds really good.. I want this for my S63 with the 5.5 M157

[@preslavnedyalkov5432]

I know people are dissapointed, I know that people don't like the exhaust he made, neither do I...in terms of sheer volume. You have to understand that this exhaust was made marginally better than the last one. It doesn't have any drone, crackle, buzzing sound. This is what a quality exhaust sounds like. I know that the before exhaust sounds gnarlier but in other terms, it doesn't make the same horsepower (lower hp), it doesn't have a catalytic converter and it sure isn't bearable on long cruises XD. The fact is that we don't really know what this sounds IRL, I think that if I heard it, my opinion would change a little bit and maybe I would like the tone more, but for now all I can say is that this exhaust is really good.

[@Falco_e46]

Before had less drone and better sound

[@Hi_Im_Jay1020]

This system honestly sounds awesome! Though, there’s gonna be people who mindlessly comment and thrash on it. They don’t have taste like you and the boys at FMU do, OJ 😂

[@FluidMotorUnion]

Exactly!

[@michaelmurray6388]

After, with that deep throat growl sounds great, I want my 550 to sound like that!

[@georgekrapivko]

New one sounds more fitting for an AMG. Not screaming for attention, just demands it

[@FluidMotorUnion]

couldn't have put it better myself

[@mitkine]

Great job

[@FluidMotorUnion]

Thank you, we try

[@DavidRistic-f4e]

LMAO it sounds so much better after, it isn't even close. These comments about it being better before are 100% from guys who have lobbed the rears off their C300 and think it sounds "sweet bro"

[@Man_of_TheWay]

Love to see an exhaust that doesn't pop and crack like so many with no taste or style seem to like now. Aggressive and smooth without the trash sound.

[@dgafkucky]

sounds classy now

[@FluidMotorUnion]

That is always what we aim for classy, refined tones unless a customer wants something else...

[@bradley-jamesnorris4499]

Whilst I really appreciate the thought, time and development that went into that exhaust, the rest is subjective and personally opinions. Personally the aftermarket exhaust sounds barely different, it may do in person but that’s still holding back what makes AMG so special - that anger and cracks. I’ve tried a few exhaust setups both brought and “hacked” and of course as a personal opinion, I can’t seem to find anything that sounds better than the stock headers without cats, and secondary cats removed. Retain resonator and mufflers has the angriest sound while retaining that AMG tone. X pipe introduces a rasp at any stage of the exhaust but you just reversed that with everything else, somewhat pointless. A very artistic approach and I enjoyed the video, but personally you can achieve a more attractive sound. That being said, I hope the customer is happy, and very nice work on the making of the exhaust and the video

[@rich2kbusa]

Resonator delete sounds better. Amazing quality work though!

[@MrWhiteTank]

Before is 20 year old me. After is 30 year old me. 😉. 23:19 that take off fly by is wicked. I want to do a tune, down pipes, and muffler delete on our 2014 gl450.

[@toddn.3123]

I challenge you to try to make a Audi B8 S4 3.0t with test pipe (aka stocks cats removed) and cats moved further down stream...and make it sound good. I've yet to see anyone with a "good" sounding system. It is knows for having a rasp and buzzing when people move the cats as they are known for melting from tuning. Would love to see what you can do.

[@Akiss]

The before sounds more raw, rough and better. The after cleans up the sound with more sound separation between the exhaust and turbo, but it loses that edginess. Personal preference, but AMGs sound best when a bit unrefined.

[@sandman5081]

I just deleted my resonators the best sound for the money period.

[@andrewmartino6144]

Looked your place up... Naperville IL... Not that far from Milwaukee WI. I might just have to bring my G-Wagen to you guys when I get it!

[@yazidyusoff354]

The car now sounds “bigger” and much more refined. Curious how you guys would tackle a 4 banger NA tho 😁

[@lellychan4135]

I really want to bring my Mazda 3 Hatch in so you guys can finally be the ones to get this cars natural sound down. sure it isn't the fastest or the quickest in the turns, but its an affordable lux sports car, but damn is it so much fun to throw into corners and to drive it fast. all the other major brands SUCK in my opinion in trying to bring out the cars sound and make it sound like a stereotypical 4 banger, but the entire engines architect should make it a completely unique sound since its based on a diesel/gas technologies brought together, and the stock sound in cabin or outside sounds so deep and grungy (good grunge) its easy to fall in love with it, but to modify and bring that sound out, barely any videos exist. in fact one build was from a ebay 1-2 muffler connector that was labeled "performance" and after the OEM muffler delete he just had it piped from the connector muffler into a 2.5 pipe then 4" tips. it costed him $200 and tbh it sound WAY better than the other brand's $700+ kits

[@bbotelhoHI]

You nailed it with “more refined”. Then again, it’s all in the eye (ear) of the beholder. My e63 is stock, minus a res delete. It’s ok. Reminds you that the exhaust is there WOT. I don’t like that raspy sound that you hear on a lot of E55 cars. It’s still a MB at the end of the day.

[@335i101]

New subscriber here: We just need you to help my 2024 911 Turbo S with Porsche Sport Exhaust to sound better. Recently, had some kids ask me, “let’s hear it!” I first gave them the disclaimer that turbo 911s sound like garbage, then while cowering in my seat and looking away from the kids, reved it up. The kids replied, “It’s sounds like an electric leaf blower.” (Ok, maybe they didn’t say that, but it doesn’t sound good.)

[@335i101]

Well you’re at it there are ZERO options for exhaust for the new (2025) G550. I had a ‘22 with the v8, now it’s a 6cyl, I love everything about it except the exhaust…

[@Imesswithcars]

This is definitely a OEM+ kinda set up, sounds good. Just needs a bit more drama in my opinion

[@robbertmadden1386]

Yes it's a definitive improvement and somebody is going to ask the driver, hey man where did you get that exhaust, and yeah digging the glasses 🤓

[@abAMGab]

After the x pipe is how the m157 G63 sounds

[@j.kstallin6898]

This guy looks like undercover cop trying blend in on something, with those colourful glasses frame

[@FluidMotorUnion]

Or maybe a tech who’s worn a uniform for 30 years and enjoys the tiny flare they allow 🤷🏽‍♂️🥸

[@James_T_Kirk_1701]

It sounds really NICE and elegant. But I bet that would run 3 to 5k. I might have had the cash for an AMG but I’m not spending that much when I can delete my catted down pipes and 40hp in the process.

[@FluidMotorUnion]

You'd be surprised, we're just as concerned about the price tag as you are. We're just trying to make a good product!

[@James_T_Kirk_1701]

@@FluidMotorUnion no no, please don’t take that the wrong way. Top notch work. If you produced it I would probably consider it depending on the price.

[@cosmokramer4585]

I’m trying to figure out a route to go for my M156 ‘10 E63. Looking for a decent set of long tubes and also a cat back system. Perhaps installing C63 mufflers and leaving the resonators…I don’t meant too much rasp. I figured you would have some advice. I’d bring it to you to look at if I lived a little closer. Thanks man!! Great video btw!!

[@razors5872]

It's all about the cost, what did that custom system cost? U can buy a system for $1600 plus labor. Or just cut out cats put in an x pipe for maybe $600 that sounds great too

[@55onit]

It's sounds great but needs a little harshness added back maybe remove the megaphones

[@ramtinson]

I prefer the lower toned after sound.

[@troyjeup2861]

It’s more of a cost thing. Someone who does muffler delete isn’t the person who is going to consider a catback.

[@andyp8464]

I prefer a filthy sound😅 The before has the lovely rasps but the after has such a deep growl. Both are great

[@AS-gp9kg]

Wizard!

[@blacktalonsport1262]

You've definitely made it sound much cleaner. What's the cost of what you've done? I feel like the cost of many of the systems for AMG cars are way higher than it needs to be so cutting part of rhe OEM parts out to get a "decent" sound just seems more cost friendly

[@TRICKDAWG]

I hacked up my CLS 63 AMG M156 resonator & secondary cat delete...straight pipe..... left the OE mufflers sounds great

[@HiRevEk]

Now be honest how much did the setup up cost! I know the high flow cats add a lot to it. I would love to do this exact setup without cats!

[@Radsi99]

I prefer before, i think after it sounds more like stock

[@vladbilyk2387]

I do appreciate the work you guys do. It is an art form truly. However, to my ears, I love when this car produces cracks. I had a 2013 CLSAMG 63 and the only mod I have done was to cut the resonator out completely and put straight pipes in. Nothing else moded - stock Cats stock exhaust. It sounded awesome and produced thrilling cracks and pops. The most important part there was no drone. It is like German engineers made that resonator easily accessible intentionally so you could remove it and truly enjoy what the AMG was supposed to sound like. The result that you guys have gotten, I can hear the deeper tone, which I like, but I think it sounds a little too sterile for my ears, especially knowing what that engine could sound like. However, please keep producing these videos. They’re awesome. I love to see the different results you guys get with different set ups.

[@VolkyHaus]

Have you done any 4.5L Cayenne?

[@KevinUrban-u1z]

That sounds great. I bet it will sound even better if i just remove it completely. Sounds good is just a opinion. Opinions are like axxholes. Everyone has one.

[@TheirizarryfamilyGaming]

I prefer the first one

[@s15rob91]

Exhaust system you’re welcome