BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
Post Reply
 
Thread Tools Search this Thread
      06-13-2010, 12:18 PM   #1
per
Lieutenant
Sweden
17
Rep
504
Posts

Drives: M3 E92
Join Date: Jul 2007
Location: Sweden Gothenburg

iTrader: (0)

Quiet catless exhaust

I am looking for a cat less exhaust who is as quiet as possible, right know I have the RPI midpipes and stock muffler and my neighbors hate me. The sound is very raspy and to loud.


I have some options.
1.Rebuild the RPI mid pipe and adding tvo resonators and an x pipe.to break the exhaust pulsations, I am not sure this will work but I could give it a try.

2.Find a muffler that removes the raspy sound and reduce the sound

3. ??


I have searched the forum but didn’t find anything useful, any advice is welcome.
__________________
M3 E92 ESS VT-625
Appreciate 0
      06-13-2010, 01:27 PM   #2
NatAsp-M3
Private
NatAsp-M3's Avatar
4
Rep
95
Posts

Drives: e90 M3
Join Date: Feb 2010
Location: Honolulu

iTrader: (0)

I don't know, Per, I kinda think the resonators do more to reduce drone than overall sound. Even HFCs at 100cell seem to make very substantial differences in sound decrease vs straight downpipes. Borla has a quad resonator catless pipe that won't be too much pocket pain if you don't like it. I've only heard that thing on a stock exhaust, but my bet is on any aftermarket muffler it will drastically increase decibels.
__________________

e90M3, sold: Akrapovic // Brembo // VRS // Eisenmann // Advan RS // ESS // Challenge
Appreciate 0
      06-13-2010, 01:29 PM   #3
FStop7
I like cars
FStop7's Avatar
Vatican City State
114
Rep
5,055
Posts

Drives: M6
Join Date: Oct 2008
Location: Newbury Park, CA

iTrader: (3)

Cats act as mufflers, by removing thrum the exhaust will be louder. No way around that.
Appreciate 0
      06-13-2010, 03:23 PM   #4
e.n335
Moderator
e.n335's Avatar
Austria
102
Rep
4,480
Posts

Drives: e93 ///M3 DCT, 07/2009
Join Date: Feb 2007
Location: Switzerland, ZH

iTrader: (0)

I'm looking forward to an Evolve X-pipe & Remus street configuration. Second choice for me is the Challenge X-pipe & Remus.
__________________
Not more than 500 chp for my daily driver. Well, ... .
Appreciate 0
      06-13-2010, 03:35 PM   #5
M3Alpine
Major
M3Alpine's Avatar
20
Rep
1,472
Posts

Drives: e92 M3 AW/FR
Join Date: Feb 2006
Location: Central NJ

iTrader: (11)

quiet and catless... goodluck
__________________
2002 AW/IR : Sold
2004 AW/BLK : Sold
2009 AW/FR : Sold
Appreciate 0
      06-15-2010, 03:25 PM   #6
dcgolfdr
Wheelsucker
dcgolfdr's Avatar
United_States
22
Rep
1,035
Posts

Drives: M3 and a truck
Join Date: Oct 2008
Location: Arlington, VA

iTrader: (11)

I just installed the Dinan midpipe this past weekend and I would say that it doesn't increase the volume of the exhaust that much. I paired the pipe with the Bastuck rear section, which is pretty quiet, but the increase is not a raspy sound, it is more of a deep sound. Doesn't sound like a mustang but it does sound like it has a V8. When you do hit the gas and get above 5000 rpm the sound does increase as well as the power, but for normal driving I don't think the car is much louder than just the rear section. I will try to get some vids later. Look at the vids of the full dinan setup, the Bastuck is more mild than the dinan rear section.
Appreciate 0
      06-15-2010, 05:26 PM   #7
DLSJ5
Brigadier General
DLSJ5's Avatar
United_States
108
Rep
3,570
Posts

Drives: 08 E92 DCT M3
Join Date: Dec 2006
Location: CA

iTrader: (1)

Send a message via AIM to DLSJ5
With the Gintani Catless X-pipe/resonators, combined with the stock exhaust, it is not much louder than stock while cruising, it's only loud when you get on it, exactly how I want it.
__________________
08 E92 M3 DCT - Bolt Ons - 60-130MPH 10.71s - 11.88 @ 118MPH - 377WHP
ESS VT2-625 SC 60-130MPH 6.80s - 11.30 @ 129.3 MPH 586WHP / 379WTQ
ESS VT3-750 - 60-130MPH 6.14s - 10.81 @ 135.13 MPH 690Whp/463Wtq
Shift-S3ctor E92 M3 - 1/2 Mile Trap Speed WR - 174.13 MPH
Appreciate 0
      06-15-2010, 05:34 PM   #8
OMID INC
Lieutenant Colonel
OMID INC's Avatar
34
Rep
1,565
Posts

Drives: E70 X5
Join Date: Feb 2010
Location: Chicago

iTrader: (6)

remove cats and add resonators. that will quiet it down a little.
Appreciate 0
      06-15-2010, 05:58 PM   #9
808E90
808E90
808E90's Avatar
United_States
86
Rep
4,019
Posts

Drives: E90 ///M
Join Date: Aug 2008
Location: Aloha State

iTrader: (21)

Quote:
Originally Posted by DLSJ5 View Post
With the Gintani Catless X-pipe/resonators, combined with the stock exhaust, it is not much louder than stock while cruising, it's only loud when you get on it, exactly how I want it.
Are you running 4 or just 2 resonators?

I'm in the same boat as you Per ... I'm just going back to stock x-pipes with a rear system
__________________
LTMW FTL . Karbonwerks LCI Trunk . Vorsteiner Poly Front Lip . NA Motorsports LUX H8 . RECARO Pole Position Seats . BMW Performance Pedals . BMW Performance Performance Grills . BMW Painted Fender Grills . BBS 19x9.5 19x11 LMs . Michelin PS2 265/295 . H&R Sport Springs . Wheel Mate 45/55MM Stud Kit . BBS Red Lug Nuts . ESS VT1 Supercharger . Akrapovic GT4 Exhaust
Appreciate 0
      06-15-2010, 09:11 PM   #10
DLSJ5
Brigadier General
DLSJ5's Avatar
United_States
108
Rep
3,570
Posts

Drives: 08 E92 DCT M3
Join Date: Dec 2006
Location: CA

iTrader: (1)

Send a message via AIM to DLSJ5
Quote:
Originally Posted by 808E90 View Post
Are you running 4 or just 2 resonators?

I'm in the same boat as you Per ... I'm just going back to stock x-pipes with a rear system
4 resonators, while cruising it's not loud guys, now the Borla was LOUD at every throttle position!
__________________
08 E92 M3 DCT - Bolt Ons - 60-130MPH 10.71s - 11.88 @ 118MPH - 377WHP
ESS VT2-625 SC 60-130MPH 6.80s - 11.30 @ 129.3 MPH 586WHP / 379WTQ
ESS VT3-750 - 60-130MPH 6.14s - 10.81 @ 135.13 MPH 690Whp/463Wtq
Shift-S3ctor E92 M3 - 1/2 Mile Trap Speed WR - 174.13 MPH
Appreciate 0
      06-23-2010, 11:37 AM   #11
per
Lieutenant
Sweden
17
Rep
504
Posts

Drives: M3 E92
Join Date: Jul 2007
Location: Sweden Gothenburg

iTrader: (0)

I was not that happy with the sound of the RPI midpipe so this i what i did.
A complete rebuild of the midpipe , with a new X-pipe and two new mufflers, the terrible rasp disappeared it is still quite loud under Vot but this is how i want it, Quiet during cruising and normal driving, and aggressive during vot, i am very happy with the result
Attached Images
 
__________________
M3 E92 ESS VT-625
Appreciate 0
      07-02-2010, 12:23 PM   #12
M II
United_States
35
Rep
1,210
Posts

Drives:
Join Date: Jun 2009
Location: La Habra, CA

iTrader: (0)

Quote:
Originally Posted by per View Post
I am looking for a cat less exhaust who is as quiet as possible, right know I have the RPI midpipes and stock muffler and my neighbors hate me. The sound is very raspy and to loud.


I have some options.
1.Rebuild the RPI mid pipe and adding tvo resonators and an x pipe.to break the exhaust pulsations, I am not sure this will work but I could give it a try.

2.Find a muffler that removes the raspy sound and reduce the sound

3. ??


I have searched the forum but didnít find anything useful, any advice is welcome.

Adding a Remus Sport paired with your current setup should be enough to quiet the exhaust down somewhat. The Remus Sport Exhaust is one of the quietest systems on the market.

They do sound great when paired with X-Pipes though!
Appreciate 0
      07-02-2010, 01:45 PM   #13
tightie
JOSH SHOKRI.
tightie's Avatar
United_States
196
Rep
5,832
Posts

Drives: 2015 F80 YMB M3
Join Date: Aug 2005
Location: los angeles, california.

iTrader: (7)

Garage List
2008 BMW M3  [3.95]
I'm running the Gintani X pipe with 4 resonators and a akra rear.. it's pretty quiet
__________________
Current: 15 991 GT3 | Past: 15 YMB F80 M3, 13 E92 M3 DCT, 08 E92 M3 6MT, 07 E60 M5, 02 E46 M3, 06 E90 325
*Upcoming Track Days: July 21 @ Willow Springs Raceway
#SpeedDistrict #Tightie | @SpeedDistrict @JoshShokri
Appreciate 0
      07-02-2010, 04:06 PM   #14
GTM_Challenge
GTM_Challenge's Avatar
United_States
141
Rep
2,942
Posts

Drives: E92 M3,X5M,F30 335
Join Date: Jan 2010
Location: Chicago

iTrader: (7)

Send a message via AIM to GTM_Challenge
Quote:
Originally Posted by per View Post
I am looking for a cat less exhaust who is as quiet as possible, right know I have the RPI midpipes and stock muffler and my neighbors hate me. The sound is very raspy and to loud.


I have some options.
1.Rebuild the RPI mid pipe and adding tvo resonators and an x pipe.to break the exhaust pulsations, I am not sure this will work but I could give it a try.

2.Find a muffler that removes the raspy sound and reduce the sound

3. ??


I have searched the forum but didnít find anything useful, any advice is welcome.


The RPI has no resonators or cats, so it will of course by nature, be louder. the other factor that contributes to the sound, and rasp, is that they moved he X section back about 8 inches or so. This has an effect on the sound as well.

I would recomend at least adding a set of good sized resonators to take the volume down. It may also cut down the rasp a tad. If you are looking for a full replacement, many are out there of course if you dont want to hack one up.
Appreciate 0
      07-06-2010, 09:11 AM   #15
MrHarris
yodog
MrHarris's Avatar
United_States
84
Rep
5,036
Posts

Drives: '86 Corolla
Join Date: Jun 2007
Location: Diamond Bar, Ca

iTrader: (5)

Garage List
2009 BMW  [5.00]
Send a message via AIM to MrHarris
Add resonators and the rasp should tone down/be gone.
__________________

2009 E92 M3 | Alpine White | Black Extended | Advan RS | Turner Test Pipes | Dinan Axle-Back | OETuning | Eibach Springs | UUC SSK | VRS Front Lip | VRS Type I Diffuser | Matte Black | RPi Scoops | MS Filter | Yokohama AD08 | F1 Pinnacle
Special Thanks: Gintani | OETuning | eAs
Appreciate 0
      07-06-2010, 11:13 AM   #16
CSanto
Colonel
97
Rep
2,175
Posts

Drives: 2015 BSM/SO M3
Join Date: Feb 2009
Location: New York

iTrader: (2)

not to thread jack, but im kinda in the opposite boat. I have an ES and I want more sound, but I dont want to delete my primary Cats.

I'm wondering what combination of secondary cats/resonators will give me a nice sound under WOT.
Appreciate 0
      08-30-2010, 12:08 PM   #17
///M 4 Life
Captain
///M 4 Life's Avatar
18
Rep
858
Posts

Drives: 2014 ///M6 CP
Join Date: Oct 2009
Location: Central Jersey

iTrader: (0)

if i would add resonators to my x pipe, which kind of resonators are they??
Appreciate 0
      08-30-2010, 12:28 PM   #18
Kwan04
New Member
0
Rep
7
Posts

Drives: 2011 M3
Join Date: Aug 2010
Location: Houston, TX

iTrader: (0)

So for those running Gintani Catless pipes, are there any concerns with CEL?
I'm coming from an E60 M5 runnning without secondary cats and the sensors were all before the scondary cats and had no problems.
I thought I read on these forums that you would throw a CEL with this setup.
Thanks and sorry if its been posted before.
Appreciate 0
      08-30-2010, 12:34 PM   #19
Bob MG
Moderating
Bob MG's Avatar
United Arab Emirates
111
Rep
1,980
Posts

Drives: like a muppet
Join Date: Oct 2009
Location: Dubai

iTrader: (0)

I hate noise but this came out beautifully:

http://www.m3post.com/forums/showthread.php?t=424713

Sound same as akra full system, which isn't bad at all and Zero drone
Appreciate 0
      08-30-2010, 12:37 PM   #20
Bob MG
Moderating
Bob MG's Avatar
United Arab Emirates
111
Rep
1,980
Posts

Drives: like a muppet
Join Date: Oct 2009
Location: Dubai

iTrader: (0)

Quote:
Originally Posted by **********s II View Post
Adding a Remus Sport paired with your current setup should be enough to quiet the exhaust down somewhat. The Remus Sport Exhaust is one of the quietest systems on the market.

They do sound great when paired with X-Pipes though!
Defiantely not!! I had a fabspeed with remus sport and the drone rattled my teeth out!!!!

Plus noise was aggravatingly loud
Appreciate 0
      08-30-2010, 01:17 PM   #21
Kwan04
New Member
0
Rep
7
Posts

Drives: 2011 M3
Join Date: Aug 2010
Location: Houston, TX

iTrader: (0)

After some searching it seems that
Gintani X-pipe(Catless) with 4 resonators + stock muffler= fairly drone free but CEL
Gintani X-pipe(HFC) + stock mufflers = fairly drone free without CEL

Does everyone agree? Also can you add 2 resonators with the HFC setup?
Appreciate 0
      08-30-2010, 01:49 PM   #22
per
Lieutenant
Sweden
17
Rep
504
Posts

Drives: M3 E92
Join Date: Jul 2007
Location: Sweden Gothenburg

iTrader: (0)

My setup with X-pipe and 2 resonators stock mufflers, has no drone at all.
It is a little louder than stock, but in a good way
__________________
M3 E92 ESS VT-625
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 03:03 AM.




m3post
m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST