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      02-18-2014, 06:06 PM   #1
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Exhaust system database for the M3 and M4!

While we eagerly await the arrival of the new M3/M4, all of us at IND can’t help but stare at every single component that graces BMW’s press releases. As car enthusiasts, the sound and power of a sports car is always one of the car’s most dynamic qualities and many fans posting in the F80/82 section are already speculating about this car’s sound and performance.

To contribute to our collective day dreaming, IND would like to build an exhaust system database for the F80/F82 chassis cars, starting with the original BMW exhaust system. Here we will compile photos, specifications, video clips, and all other details related to the sound that an M3 or M4 can make.

I’m certain that the future will bring us some great aftermarket and performance exhaust offerings from many manufacturers. These, and more information on the original BMW exhaust will fill the pages of BimmerPost as more exciting news about the M3/M4 develops!

Original BMW exhaust system
  • Exhaust features electrically controlled flaps just before rear silencer to minimize exhaust back-pressure as well as giving precise feedback on engine load.
  • When closed, flow is forced into and laterally across the silencer; when open, flow is more directly through the narrow part of the silencer.
  • Catalysts with metal substrate (less restrictive than ceramic)
  • Exhaust always exits all four tail pipes











-----------------------------------------------------------------------------------
Akrapovic Slip-on and EVO for the F80 M3 + M4

ME-BM/T/7H Evo Line = $5215.95 (without tips)
M-BM/T/8H Slip On = $3075.95 (without tips)
TP-T/S/8 Ti tips = $1515.95 (Titanium finish)
TP-CT/26 Carbon tips = $1515.95 (Carbon)
DI-BM/CA/1 Rear Carbon fiber diffuser = $1200.95 (optional diffuser)
DP-BM/SS/3 Downpipe (SS) $1485.95 (optional and requires a tune)











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Last edited by IND-Distribution; 06-26-2014 at 12:38 PM..
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      02-18-2014, 06:21 PM   #2
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Sounds like a gas scooter!
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      02-18-2014, 06:26 PM   #3
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Quote:
Originally Posted by cksv View Post
Sounds like a gas scooter!




I'm looking forward to seeing the aftermarket offerings as well.
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      02-18-2014, 06:37 PM   #4
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Quote:
Originally Posted by cksv View Post
Sounds like a gas scooter!
So is it gas scooter or lawn mower (...or are you still trying to articulate the sound that your ears hear)?
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      02-18-2014, 06:39 PM   #5
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I'm guessing Akra will be $7,400 for the system... unless they do valves, then more like $8,500.
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      02-18-2014, 07:00 PM   #6
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Quote:
Originally Posted by Sedan_Clan View Post
So is it gas scooter or lawn mower (...or are you still trying to articulate the sound that your ears hear)?
Haha I am quite baffled by what I just heard, but I'd probably say it sounds like a gas scooter with a lawn mower engine lol.
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      02-18-2014, 07:55 PM   #7
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Quote:
Originally Posted by cksv View Post
Haha I am quite baffled by what I just heard, but I'd probably say it sounds like a gas scooter with a lawn mower engine lol.
It's turbo charged scooter :-)
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      02-18-2014, 08:13 PM   #8
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I'll be honest with you, yes it does not sound that great.
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      02-18-2014, 09:13 PM   #9
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I reckon chainsaw is the best description I've heard so far....maybe a high-end one, a Stihl perhaps.
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      02-23-2014, 10:14 AM   #10
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Not going to be a simple bolt-on muffler change since it's one continuous piece.
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      02-23-2014, 10:35 AM   #11
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@IND any idea on when Eisenmann will have a exhaust available?
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      02-23-2014, 10:45 AM   #12
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Hope there's a way to keep those valves closed during emissions testing

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      02-23-2014, 02:08 PM   #13
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You can hear the stock exhaust towards the end of this video as well:

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      02-23-2014, 10:51 PM   #14
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there have been plenty of videos posted of this car by now, many with the car under LOAD, which gives you a better idea of how the car will sound. Not too shabby. It isn't a V8, will never sound like one, but certainly will perform. People going from the e46 M3 to E9X M3's bitched about the weight of the S65 compared to the raspy fart can S54. Now BMW said, lets make this car lighter and more efficient, the return of the I6 slapped w/ two turbos, and now people are bitching about the noise the car makes. I mean even the S65 sounds like its missing a left nut with the stock exhaust. Reminds me of the fact that you can't please everybody. Just give it time, so far this car hasn't disappointed. Great thread by the way.
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      02-24-2014, 06:49 AM   #15
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Quote:
Originally Posted by Tonymiabmw View Post
IND any idea on when Eisenmann will have a exhaust available?
IIRC Nate replied to one of my questions some time ago, stating Eisenmann already started R&D. So it should be available not too long after launch.
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      02-24-2014, 07:37 AM   #16
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I doubt they have a M3/M4 already for R&D.
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      02-24-2014, 09:30 AM   #17
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If they are doing piped in noise, then the exhaust is supposed to be quiet by design. I think this is an EU thing where they are really trying to nuke the loud exhausts. Obviously, it sucks to have to spend an extra chunk of change on an aftermarket exhaust (the pricing on some of these systems is absurd), especially when the S65 sounded so incredible out of the box. But rest assured, I believe the exhaust note emo can be cured with a couple grand.

I know it's a horrible apples to oranges comparison, but check out how Milltek improved the sound of the 3.0 S/C V6. The 3.0 V6 sounds *a lot* worse IMO than the 3.0 N55 I6 for comparisons sake, especially with respect to drone.

Stock


Milltek

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      02-24-2014, 10:52 AM   #18
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Yes!! One thing I did enjoy a lot on the S4 B8, Milltek non-res.. God..
A lot of potential!
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      02-24-2014, 02:07 PM   #19
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Quote:
Originally Posted by Tonymiabmw View Post
IND any idea on when Eisenmann will have a exhaust available?
Quote:
Originally Posted by GregD View Post
IIRC Nate replied to one of my questions some time ago, stating Eisenmann already started R&D. So it should be available not too long after launch.
Eisenmann has been working hard to develop design philosophy for the M3/M4 exhaust system, prior to the car's release. Eisenmann will need complete cars to test the designs for fit and performance, but IND conveniently has both an M3 and an M4 on order for use as development vehicles, for Eisenmann, RKP, Brembo, BBS, KW, and many other companies to use.

Quote:
Originally Posted by paddy335 View Post
I reckon chainsaw is the best description I've heard so far....maybe a high-end one, a Stihl perhaps.
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      02-24-2014, 03:28 PM   #20
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Quote:
Originally Posted by Ilia@IND
Quote:
Originally Posted by Tonymiabmw View Post
IND any idea on when Eisenmann will have a exhaust available?
Quote:
Originally Posted by GregD View Post
IIRC Nate replied to one of my questions some time ago, stating Eisenmann already started R&D. So it should be available not too long after launch.
Eisenmann has been working hard to develop design philosophy for the M3/M4 exhaust system, prior to the car's release. Eisenmann will need complete cars to test the designs for fit and performance, but IND conveniently has both an M3 and an M4 on order for use as development vehicles, for Eisenmann, RKP, Brembo, BBS, KW, and many other companies to use.

Quote:
Originally Posted by paddy335 View Post
I reckon chainsaw is the best description I've heard so far....maybe a high-end one, a Stihl perhaps.
If you guys can't fit all those parts on those cars I'll let you borrow mine to fit a few. Lol
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      04-14-2014, 10:26 AM   #21
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Quote:
Originally Posted by Tonymiabmw View Post
If you guys can't fit all those parts on those cars I'll let you borrow mine to fit a few. Lol




Latest addition to the sound clips:

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      04-14-2014, 10:37 AM   #22
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