Best Exhaust - Stock vs Sport vs 4 Muffler Deletes - From mild to maniac
2024 ж. 13 Мам.
194 433 Рет қаралды
Do BRASS STRAIGHT PIPES sound good? Here we put the E46 BMW through various exhaust experiments to find out what is the best exhaust
Stock vs "golf tee mod" vs TA Technix, vs muffler delete
following muffler deletes are tested:
Mild Steel
Stainless Steel
Brass tipped SS
Brass
00:00 - Intro
01:43 - Golf Tee Mod
06:02 - TA Technix muffler
13:39 - Mild Steel Muffler delete
19:46 - Stainless Steel and Brass Tips
25:43 - Brass Muffler Delete
Really well put together video buddy! The brass tip insert making such a change is mainly down to 2 things. 1. The tip has introduced a change in internal diameter, creating a small choke point. You can hear the interruption in flow on the cold start clip, where there is a slight "hiccup" before the flow corrects itself. 2. The extra weight on the end due to the difference in density changes the harmonic frequency running through the pipe, in much the same way weighted bar ends do on a motorcycle handlebar. You would get a similar effect, albeit less pronounced, with a rolled tip on the steel pipes, be it inwardly rolled/outwardly rolled. The brass pipes sounded much nicer than either steel option, giving a deeper, richer tone through my earphones. Not sure its worth the ten fold price increase over mild steel though. Again, great video, really enjoyed it. Would be keen to see other materials tested such as copper or aluminium, finances allowing. Keep up the good work sir. 💪🏻
Thank you so much for this explanation. Can i pin it? Because i think this is what happened in this video. Clearly im not an expert, i just turn wrenches lol
@OEMplusRESTO you're very welcome friend. Of course, feel free. I'm far from an expert myself, just a fabricator with a keen interest in flow dynamics, so exhaust & intake systems hugely interest me. I'm currently welding cast iron pipe whilst listening to your airbox to cone filter comparison. Really good work. 👍🏻
@g.w.customcreations3534 thank you. Cast iron?? I though brazing was hard lol. I took my first attempt at a full brass exhaust yesterday using brazing but holu hell it was hard. Cast iron is even worse ive been told
@OEMplusRESTO yeah, brazing can be difficult. Are you using oxy-fuel or TIG to braze? Cast Iron has its difficulties, but once you have the knowledge, it's not too challenging. Having an older mentor, much like you & your father, helps a great deal. They've already made the mistakes, and can teach you how to avoid them. The older generations are worth their weight in gold, so it's worth the time to listen. 😁
Kind of makes me thing of weighted bar ends on motorcycle handlebars. It does change the vibration/feel.
I love the idea and would love to see a full brass exhaust
Hell yes! Full brass exhaust would be awesome! Idk if headers would work though with exhaust temps getting as hot as they do. But idk!
Would be cool but would absolutely melt under load anywhere before or after collector, from the mid pipe back it may stay for a while.
For my STi there are stainless, titanium, and aluminum available for catback exhausts... Once my mild steel 3in rusts out I'll be looking for something else.
Not to mention brass is HEAVY
Wow the brass tips are amazing change
Tips in general change the sound quite abit being brass or stainless.
Thank you for making the time to make this great video
Thank you for watching and commentig. Thats what make its more fun for me🙏
This video is going to cost me some money 🙈🤩. Thank you again for a great video. My neighbors are going to be mad😬😬
What you getting? :D
This video is gold. So much info you absolutely can’t go wrong ❤
I like your english accent, but your compare videos are so much better than this ❤ Thx dude for your work!!
Thank you. Alot of people comment on my accent😅 must be very noticeable. I dont notice it myself though🤣
It is very much a Danish accent - fellow dane 🎉
Hats off to you!!! One of the best videos I have seen in a while!!!!
you are making very interesting videos! i love this experiments!
Oh man. It totally makes sense to me. I think you are really onto something. Thanks for the effort. You rock man!
Very in depth as ever Tim. Top work😊
Another fantastic video as always. Keep it up ❤
The amount of work put into this video is incredible! I too was holding onto the edge of my seat waiting to see what the brass pipes sounded like. As unfortunate as they were, I think the fact that we've figured out that brass tips make a difference to tone and drone is excellent. At least through the mic, the pipes sound better than the mufflers because they have a deeper 'growl' to it. In person though, I DO know that what sounds deeper on the mic often is much dronier in real life. Excellent video, love your level of care throughout these videos. All the little details make the difference. You've even gone above and beyond to do acceleration tests. As for the difference in performance, I reckon it has to do with back pressure. With the TA Technix muffler you probably have the perfect amount of back pressure compared to the restrictive stock muffler, and then with the pipes you might have TOO much back pressure causing you to lose power instead. Just a theory but this could be the case.
Really good analysis and thank you for the feedback sir💪
@@OEMplusRESTO No worries! You earned yourself a like and a new subscriber. Looking forward to what else you figure out. I watched your intake video too before this one and that impressed me too :)
@@qwertiee thats very kind of you to say. Thank you.
Back pressure is a myth. You only need an ideal diameter for proper flow but not necessarily a restrictive pipe. Everything else is your statement I do agree. It was barely perceived, but the note with brass pipe seemed deeper
@@OEMplusRESTOHi Mate thanks for the great work, just wondering if you could kindly help me with the link for the TA T echnixx muffler thanks.
Wow thanks for answering a question i had since forever
These videos are the best!! Keep up the work
this is super cool thank you for exploring our thoughts for us
Love your excitement & knowledge in these vids. So cool to see all your tests!
Thank you. Im happy you liked it
Wow We'll never stop to discover new things
Another interesting experiment. Looking forward to your next video.
Thank you again for another great video brotha, you are doing so much for e46 enthusiasts, your videos are extremely helpful and very appreciated.
Thank you for your continued support. It is much appreciated❤️
Keep on testing! Your videos are priceless.
I always get visible happy when I see you upload. My absolute favourite channel 🤙
Thats probably the best compliment ive gotten on yt so far🙏
Man this channel deserves more recognition! This is such a blast watching you experiment with your E46!
Thank you. Im happy to hear that
Very, very interesting results. Thank you!
Thank you for watching
Fantastic video, well explained and direct
I did that 40 years ago and it sounded great!
Interesting experiment for sure, thank you.
another amazing video, it’s always a good day when you upload! would love to see some testing with resonator 1&2 deletes with stock muffler and such :)
Thank you. I did consider it but all i could read online was that it would drone too much:/
Jeepers man, appreciate your time. Craft, driving,recording and perfect editing. After watching this makes it clear what were the shiny thing on some harley tips...and good explanation in the pinned post. Effin cool work!
Thank you for watching bro. And the kind words. A nice thing to read after a long day of editing so i can release a new video
Amazing ,just amazing 👏
Well done my friend!
Excellent, entertaining and informative. Such a well put together video that this is the first time I have ever commented and liked.
Thank you sir. Im honoured😎
This is the perfect explanation of, what happens to sound in density/denser objects? The more density you have, the more sound makes it out of the hole than thru the side of the pipe.
Really good video
Had a copper straight through on a hemi straight 6. Sounded beautiful❤
AMAZING video and nice WORK!!!
Thank you
great video. keep it up! :D next comparison could be about resonator delete, small resonator and big resonator
Hey there, really nice video! Keep the good work! Greetings from Brasil!
Another awesome video to see! :) Can't wait for next! Cool how the brass tips really changed the sound! And free flowing exhaust is always gonna be better, you never want any backpressure on a 4stroke, doesnt matter if its NA or turbo/supercharged.
Yeah i think its a myth that backpressure is needed. And thank you
@@OEMplusRESTOI’ve done a good amount of testing on my own personal car, and an ungodly amount of research, back pressure on four strokes is no good! I think folks are just stuck on the mindset of two strokes needing it
Dude, I was waiting for the brass tips on the brass pipe test man! The thickness difrence seems to me like would definitely change the sound!
Thank you
I have to give you credit that video is a lot of work 👍👍
Maan I just ordered a muffler to empty it two days ago and now I see this video, almost perfect timing. Good video.
Would you share photos of the insides somewhere
please post pics of the internals
My metal shop teacher was German from Germany, we got along fabulous he was a great teacher !
German from Germany?
This was really well put together! Thanks. Ive also wondered about doing thermal coatings like cerakote and or some of those insulating aero beads.
Now that would be cool. To mess around with coatings or insulation as well
THANK YOU VERY MUCH FOR THESE GREAT VIDS
Interesting. Nice testing and Results.
Thank you
great test. I had never considered material types or using solid insert tips to change the sound. Liked, Subscribed and looking forward to more videos. I really want to try brass tips on my M6 now.
I only thought of it because i know they use them in the motorcycle world. Thank for the sub
Well made video great job 💯👍
Thank you
Great test. I got a custom Magnaflow stainless cat back system on my Mitsubishi. And at first it was a bit raspy, but the mechanic said it would smooth out a bit when it gets a layer of soot in it, and this was so true, after a couple of months it had a different sound to it, a bit deeper.
Interesting.
Great video, there’s something also worth considering, the brass will be more sensitive to resonance, so tuning the length and diameter of the pipe is also a fun test you can do
Super dope video. Keep it up 💯
Thank you. I will. Will have to do a full exhaust now i can see from the comments
I've always liked the sound of straight pipes I've got 3" stainless on my 01 TA after stainless long tube headers
This was a fun test. I installed many many many exhaust systems. The best sounds always came from the thickest/ largest diameter pipe. Ive even used an old semi driveshaft as exhaust. Everything I've ever put together changed immediately with the right tips. Thick double layered stainless tips have always been my favorite. But i like the brass.
Which was the worst? Straight single wall? What about those "resonated" tips, which look like a combination of double wall and rolled edge, but with perforations and the tiniest bit of packing in it?
Amazing video! Very good
Thank you
This is a great video! I'd wage that while there was just a little difference in sound, it was because you changed only the tip of the iceberg. If you had SS headers and all of the rest in brass, specially the curves, you'd get wildly different sounds! cheers!
You've been reading my mind
The TA sounded really good..like it should have sounded from factory!! Brass made it sound almost more like E46 m3. Great video!👍
Im not that into the louder setups but i can see why others like them no doubt
Great job/video! I appreciate your endeavor!Would love to see a comparison on American V-8 setup.🤔👍
Me too bro.. i have had a few so theyre no strangers to me
Good video bro
The SS definitely sounds better than the MS, even if it's not any louder/quieter. I was pretty surprised by how much the brass tips made a difference all around! I want some brass tips, now! Especially since it matches my wheels, shift knob, etc. :) Thanks for all the testing.
Really great comparison! Loved this one even though i wont be able to either use the intake stuff nor the exhaust stuff here in germany :) Would love to see a comparison with an x-pipe for the mid section! Think that might be really interesting for performance and sound Also great to see how much the channel has grown over the time! As always really nice quality video :) Keep it up!
Thank you. Me neither bro.. i have fitted the stock exhaust and intake already🤣 but the ta technix one is e approved. Isnt that sufficient to have it legal in germany?
@@OEMplusRESTO Yea it kinda is unless you get the wrong police man at the wrong time on the wrong day then it doesnt really matter and the car gets seized by the government :D
@TOTALdAk1nG thats rough.. Its the same in dk i think but i havent had any bad experiences ever meeting a cop, so i hope that will continue. Either way, car is now fully legal again. I will try and get the exhaust valve working again too! Had to manually close it to do tests
Something interesting about sound / pressure waves that is likely the reason for the tips making a difference in the stainless exhausts is that if a pressure wave travels into an area with a suddenly smaller or bigger cross section it causes a difference in 'acoustic impedance' so some pressure waves can be resisted or bounced back by the sudden transition, so the fact the tips suddenly neck down and then flare out probably causes the fast and weak higher frequency pressure waves to be bounced back partially, reducing the high pitch droning sounds a little bit. Sorry if this gets a bit lost in Translation please look into it if your interested my explanation is probably not the best, keep up the awesome stuff and I hope your having fun :)
one thing that would be nice is cruising at highway speeds. I think that might be where the brass options could shine because they are so good at eliminating drone.
I think, you forgot one test: Brass tubing with the brass tips, because the tips change geometry of the end an manipulate the sound. But I didn't expect the sound difference to be that great, between stainless steel an brass anyway.
The pitch is definitely higher with the brass pipe! That’s really cool, I’d love to hear a full brass straight pipe
Just an FYI, if the valve muffler has had a vacuum line plumbed to it and the computer has been coded for it, the valve will be actuated around 5 minutes after cold start, from closed to open. The valve was meant to meet noise regulations on cold starts.
the brass tips look good.
Great video! I’ve been curious about aluminum since it is light and less expensive than titanium.
you rock!
Awesome video. I would think because the brass inserts had a lip on them it changes the sound more than the brass pipes. With the inserts your basically creating a whistle like device going from a larger "inlet"(base diameter of the exhaust) to smaller outlet(lip of the brass insert).
interesting , nice vid :)
Awesome video as always!! Greetings from Guatemala, do this exact format with the catless headers and consider putting an X pipe in place of the second resonator thanks 🙏🏻
Thank you. Wauw that things must be really loud? I didnt try it but i can imagine it would be too loud for an old guy like me lol
The brass had a cleaner less drone deep sound to it. I like it 👌
Thank you
Great video mate, well done! Really enjoyed the comparisons and didn’t expect the brass pipe, nice touch. I’ve recently gone back to stock w/ open valve from a stainless straight through backbox like the ta technix one and have to say it does feel like the car has lost some torque, not really sure why, was expecting the opposite given that the stock exhaust is probably more restrictive. It might just be in my head though as it’s a lot more quiet now.
Thank you. Yeah placebo is one helluva drug lol. Which muffler did you have? One of the super expensive ones?
@@OEMplusRESTO just a cheap ebay one, I belive the brand was direnza or gravity. Seems to be one a couple of ebay brands sell as their own.
Virkelig informativ og gennemført video. Næste step er at forsøge Titanium. :)
I really love this channel, I've learned so much from videos like these... I just want to say thank you for all the content you are putting out reacently! Really helpful!!! P.S. are you in need of an video editor and a thumbnail artist for your youtube channel?
I cant afford an editor sadly. But id love to. But id happily pay you for a thumbnail for this video and then we can take it from there:) And thank you. I enjoy making them so im just happy people enjoy them or find them interesting
@@OEMplusRESTO of course, I understand, where can I message you about the thumbnail?
@sanjinsegan3720 ig would be easiest. My link is in the channel description:)
those straight pipes in place of a muffler sounds good.
Intakes make a difference in cooperation with a freer flowing exhaust, so this could be a factor in how the exhaust is working with factory intake flow.
I was really hoping for a brass tips in brass pipes comparison too. But this video was still great. I definitely heard a difference in tone with each change. And now I know why the titanium exhaust I had that looked identical to the stainless, sounded different in my opinion, but my friends said it was the same. I should have recorded a before/after to prove it.
Im tempted to do that as well but i think i have something even better coming up. Just trying to do some research first
Titanium exhaust.. id love to hear that👀
The brass pipes makes it have soul (music) :)
this video is gold information thank you very much ! for curiosity i cutted open my stock 330 muffler and the piping for the valved side is very different than the side without valve . if you want to see the photos inside the muffler just pm me
Id love to. But how do i dm you?
I really like the different pitch from the brass pipes. I know you already did the straight pipes, but I'd be curious to hear full brass exhaust tips from the back of a muffler, I'd love to see that on the stock muffler but you probably want to keep that intact, so modifying the TA Tecnix would be great as well
Its a good idea honestly
Awesome garage :o It's crazy, when u try the TA one, looks like it rev higher than the stock one
Thank you:)
I wonder if the sound would change more drastically if the brass pipe was placed toward the middle of the exhaust where the exhaust resonator is located. I think it would have to create different harmonics than steel tubing because of the resonant shockwaves bouncing around off of a pipe with different material hardness properties. If I'm not mistaken theres much more interaction between the pipes and the sound shockwaves toward the middle at the resonator than there are at then end of the pipe where the muffler is located
I once lived next to a guy that started building t-buckets in the 50s. He once told me that they would cut up brass beds for the pipe, and then string a piano string- I can't remember which, tight between two screws to get it to "ring" You already have some brass pipes...
Thank you. Do you know where they attached the strings to make it ring?
@@OEMplusRESTO unfortunately I do not, and it's been some time since that gentleman passed away. It sounded like the string would be out in the air, so they might have even ran the screws all the way through and strung the string between before even installing the pipe.
i actually really like the full brass. gave it a more "exotc" sound
Must try full brass headers and all Polished. Of course. And maybe some valves. Conected to some buttons on the wheel ?
In my experience, putting a 3” tailpipe that’s at least 24” long, will deepen the tone of anything.
Didgeridoo
Im assuming you changed the stainless steels resonance when you tapped the brass rings on. like holding a cymbal to mute it.
Even when I was a kid getting my license I wanted a quiet car, I want to hear what's going on inside my engine
I was wondering about the clamp location, it will mute the ring of your brass pipes like wind chimes. I enjoyed your video in western ny
What changes the sound more is equal lenght or unequallenght headers and x/h pipes! You should test that too!
id love to
id love to hear a full brass setup ayy, its so resonant
Im working on it right.. its gonna be loud. Thats all i can say right now😅
@OEMplusRESTO you bloody legend. GET ME IN ON THIS SHIT. I've been making custom stainless exhausts for a while now and resonance and tone is everything
The only brass piping I had in the car was the last time I picked a brass up and I'm not talking exhaust pipes...
Brass is easily formed as it's soft. It would be interesting to apply some musical theory with regard to the overall shape of the tips and routing to see how it positively affects sound. The higher pitch compared to stainless would be fun with an X-pipe and a high-revving engine. It likely would scream!
i really like your tool wall
So cheap and easy too! If i need a tool there i just add a screw!! I love that solution. Means more money for parts💪
@@OEMplusRESTO any chance on doing a video on your setup? id love to see more
@mrkouki180sx hmm i dont think anyone would watch it besides us two tool afficiomados. But if you join the fb group id be happy to share some pics with you
@@OEMplusRESTO is it the one with 40 members and private?
@mrkouki180sx yes. Very small group (for now)
It will be interesting test a sport catalyst ( 200 cells ). HJS is a good brand.
Brass pipes and the tips! The diameter change at the tip forms a resonant cavity and it's that effect that you liked in the stainless pipe, so to compare it with the brass you need to replicate the cavity. This means not only a restriction of the same diameter change (I realise the brass is a slightly larger pipe), but also the same length (brass are slightly longer too, right?).
Thank you. Interesting. The brass pipes were 60cm each while the stainless and mild steel were both 50cm The brass was also slighty larger internal diameter than the other two
@@OEMplusRESTO just to be clear: when I say "same diameter change" i mean in percentage terms, not "6mm smaller" or whatever the insert on the 50mm pipe gives. The ratio of wide/narrow channel gives the "strength" of the resonance effect, the length between restrictions ("cavity length" in some literature) gives the frequency spectrum that can resonate to that extent. In optical waveguides you write Bragg Gratings (which are many such cavities end-to-end) to selectively attenuate frequencies, and the theory here is virtually the same. A wave is a wave, and guided wave physics pretty much works analagously regardless.
Great video! Thank you! I don't think the fact that the tip was brass made any difference. There are a few things in play here. The tip made the end of the pipe more rigid that reduced the vibrations so it wasn't that raspy. Also the flare you intoruced slow down the sound waves that made it sound deeper.
That makes sense. Thank you:)