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
 
Race Precision Motorsport
Post Reply
 
Thread Tools Search this Thread
      01-09-2012, 08:36 PM   #1
MEMMEZZ
Captain
 
Drives: MR.E92
Join Date: Nov 2006
Location: Los Angeles

Posts: 657
iTrader: (6)

Too much droneee

Hey everyone. I currently have a gintani x pipe with the high flow cats combined with gintani hybrid mufflers. The sounds is very loud and amazing but my patience for the drone has run out. Anyone have advice on what a feasible solution would be? Ive done research and there doesnt seem to be agreement on whether to change the mufflers or the x pipe. I was thinking about changing the x pipe to something you guys would recommend that would reduce the drone. However i do want it to still remain loud and i dont want to go back to stock mid sections.
any advice is appreciated.
thanks.
MEMMEZZ is offline   United_States
0
Reply With Quote
      01-09-2012, 09:54 PM   #2
Jon335iFL
Brigadier General
 
Jon335iFL's Avatar
 
Drives: This----------->
Join Date: Feb 2009
Location: Jrz :)

Posts: 4,831
iTrader: (14)

lower drone and sound i general = muffler

lower rasp and some drone = resonator

My suggestion = add 2 vibrant resonators
__________________


.
Jon335iFL is offline  
0
Reply With Quote
      01-10-2012, 07:08 PM   #3
MEMMEZZ
Captain
 
Drives: MR.E92
Join Date: Nov 2006
Location: Los Angeles

Posts: 657
iTrader: (6)

any suggestions on resonated aftermarket x pipes?
MEMMEZZ is offline   United_States
0
Reply With Quote
      01-11-2012, 02:11 AM   #4
m3rus
New Member
 
Drives: M3 ESS e92 VT2-625
Join Date: Sep 2010
Location: Moscow

Posts: 5
iTrader: (0)

Drone may almost completely go away over time. It took 500-700 miles for my Akra slip-ons with catless xpipes set-up to adjust.

In my case the drone was coming from the mufflers. Tried to change x-pipes - no change to the drone AT ALL.
m3rus is offline  
0
Reply With Quote
      01-11-2012, 02:39 AM   #5
The Database
Prepare to be virtually punished.
 
Drives: 2008 E92 M3
Join Date: Nov 2011
Location: Tampa/ Orlando

Posts: 123
iTrader: (0)

I'm in the same boat and am thinking of doing some sound deadening in the car. Keeps sounds out as well as making the Audio better in your car. Just leave your exhaust alone if you like how it sounds.
__________________
The Database is offline   United_States
0
Reply With Quote
      01-11-2012, 03:43 AM   #6
PAKMAN
Lieutenant General
 
PAKMAN's Avatar
 
Drives: 2011 E92 M3
Join Date: May 2006
Location: NORTHERN CALIFORNIA

Posts: 16,107
iTrader: (34)

Garage List
2011 BMW E92 M3  [4.75]
2006 e90 330i  [2.75]
i've had the gintani race mufflers with oem xpipe still got drone..
i think the mufflers are the reason for your drone because it seems like their mufflers are basically straight through.
__________________
stock car
PAKMAN is offline   North Korea
0
Reply With Quote
      01-11-2012, 10:03 AM   #7
DevJ
Colonel
 
DevJ's Avatar
 
Drives: '14 Cayman S/IS350/RRS
Join Date: Nov 2007
Location: Tulsa, OK

Posts: 2,703
iTrader: (1)

get a different muffler. maybe gintani sport?
__________________
E92 M3. SOLD
New: '14 Cayman S PDK
Incoming: GT-R Black Edition
DevJ is offline  
0
Reply With Quote
      01-11-2012, 11:15 AM   #8
aus
Major General
 
Drives: Odysse
Join Date: Jul 2005
Location: Seal Beach, CA

Posts: 7,321
iTrader: (5)

Why would you get a Gintani if you don't want a loud exhaust?
What's a hybrid muffler?

If you really want to get rid of the drone, have a shop weld on two Heimholtz chambers like what AA has. It'll work a lot better than adding some resonators.
__________________
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
aus is offline  
0
Reply With Quote
      01-11-2012, 11:56 AM   #9
dnvrdrvr
Captain
 
dnvrdrvr's Avatar
 
Drives: JB E90 M3
Join Date: Jul 2009
Location: Denver, CO

Posts: 764
iTrader: (3)

Quote:
Originally Posted by aus View Post
What's a hybrid muffler?
It's essentially their Race mufflers with the Sport packing inside. It's supposed to be middle of the road as far as sound goes between the Sport & Race.
__________________

Just a girl and her 420 ponies...
www.mw3motorsports.com
dnvrdrvr is offline   United_States
0
Reply With Quote
      01-11-2012, 12:19 PM   #10
Raptor251
ESS Dreaming
 
Raptor251's Avatar
 
Drives: 2011.5 e92 m3/Ford Raptor 6.2
Join Date: Jan 2011
Location: San Diego

Posts: 870
iTrader: (1)

I would try to add a pair of resonators to the x pipe, shouldnt cost more than a couple hundred bucks and it worked for me!
Attached Images
   
Raptor251 is offline   United_States
0
Reply With Quote
      01-11-2012, 02:03 PM   #11
lenzm3edan
First Pride
 
lenzm3edan's Avatar
 
Drives: E90, Mercedes C300, subi
Join Date: Feb 2011
Location: Connecticut..

Posts: 1,375
iTrader: (6)

Gintani exhaust is loud, I know you don't want to go back to the stock mid section but I feel it works and there is no loss in power, you will always experience drone from most if not all aftermarket exhaust setup in my opinion, especially at certain rpm. good luck
__________________
ESS VT-2 595 silverstone E90 /// M3 - 6spd - AD08 - Spacers - H&R - AA exhaust - Primary cat delete - Custom test pipes - ESS tune - Lighted ZHP.

lenzm3edan is offline  
0
Reply With Quote
      01-11-2012, 03:47 PM   #12
Brucewonder
Lieutenant Colonel
 
Brucewonder's Avatar
 
Drives: 2011 E92 M3 yea boi
Join Date: Nov 2007
Location: Socal

Posts: 1,543
iTrader: (4)

switch out the muffler...xpipe will give more volume and rasp. try installing your stock muffler and see if it still drones.
__________________
2011.5 E92 ///M3 SSII/FR
Brucewonder is offline  
0
Reply With Quote
      01-11-2012, 03:52 PM   #13
lenzm3edan
First Pride
 
lenzm3edan's Avatar
 
Drives: E90, Mercedes C300, subi
Join Date: Feb 2011
Location: Connecticut..

Posts: 1,375
iTrader: (6)

Quote:
Originally Posted by Brucewonder View Post
switch out the muffler...xpipe will give more volume and rasp. try installing your stock muffler and see if it still drones.
Will be very raspy with stock muffler.
__________________
ESS VT-2 595 silverstone E90 /// M3 - 6spd - AD08 - Spacers - H&R - AA exhaust - Primary cat delete - Custom test pipes - ESS tune - Lighted ZHP.

lenzm3edan is offline  
0
Reply With Quote
      01-12-2012, 11:10 PM   #14
The Database
Prepare to be virtually punished.
 
Drives: 2008 E92 M3
Join Date: Nov 2011
Location: Tampa/ Orlando

Posts: 123
iTrader: (0)

I still think that the sound deadening idea is the way to go. Same great sounding new exhaust, but you don't hear it when the windows are up.
__________________
The Database is offline   United_States
0
Reply With Quote
      01-13-2012, 12:03 AM   #15
Poofyo101
Major
 
Poofyo101's Avatar
 
Drives: e92 ///M3
Join Date: Apr 2009
Location: NC

Posts: 1,202
iTrader: (9)

Garage List
1988 BMW M3  [0.00]
1988 BMW M3  [0.00]
2012 BMW M3  [0.00]
1990 BMW M3  [0.00]
Just go with Akra Evo. NO DRONE.
__________________
12 E92 M3-AW/FR-20" BBS LM-Painted Reflectors-BMW Gloss Black Grills + Gills-BMW Performance LED Wheel-BMW Carbon Performance Spoiler-Akra Evolution-Stoptech Trophy
Poofyo101 is offline  
0
Reply With Quote
      01-14-2012, 07:50 AM   #16
Sal@Evolve
BimmerPost Supporting Vendor

 
Drives: Slow
Join Date: Feb 2008
Location: Luton, Bedfordshire

Posts: 1,063
iTrader: (0)

You will need a different set of mufflers to reduce or eliminate drone.

Alternatively go for a valve based exhaust setup which gives you the best of both worlds.
Sal@Evolve is offline  
0
Reply With Quote
      01-16-2012, 04:53 AM   #17
ZooyorQ
Private First Class
 
Drives: BMW M3
Join Date: Sep 2010
Location: Bay Area

Posts: 143
iTrader: (0)

Make sure to size the resonators correctly.. my buddy has three resonators on his car with a catless/mufflerless setup and his drones more than my setup which is just one large resonator. Both turbo'd E46 M3's.. so simply adding more resonators isn't always ideal.

But if the individual above said it worked for him ask him what brand/size resonator he used and replicate it.
ZooyorQ is offline  
0
Reply With Quote
      01-16-2012, 08:39 AM   #18
pbonsalb
Lieutenant Colonel
 
Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

Posts: 1,609
iTrader: (3)

Dinan and Borla are both conservative. Both used four resonators, two before the x and two after the x. I have never read complaints about either system, but regularly read complaints about some of the others.
pbonsalb is offline  
0
Reply With Quote
      01-16-2012, 01:06 PM   #19
ROB_S2K
Lieutenant Colonel
 
Drives: 2014 Grand Cherokee SRT8
Join Date: Apr 2005
Location: Los Angeles

Posts: 1,770
iTrader: (4)

You can try adding a helmholtz type chamber to your exhaust system. Basically T-Off a pipe from the main exhaust tubing add a resonator to it and seal it off. From my experience this should eliminate all drone. I doubt it will do anything to exhaust flow but since I have no dyno experience with this I am not sure. Here is a crude drawing to show what I mean.
Attached Images
 
ROB_S2K is offline   United_States
0
Reply With Quote
      01-16-2012, 02:24 PM   #20
pbonsalb
Lieutenant Colonel
 
Drives: 08 E90 M3, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: Concord, NH

Posts: 1,609
iTrader: (3)

BMW uses hemholtz chambers on some of its exhausts and some of its intakes. AA uses them on some of its exhausts, as do other tuners.
pbonsalb is offline  
0
Reply With Quote
      01-16-2012, 02:30 PM   #21
tibra1
Banned
 
Drives: 2011 ZCP M3 - 2007 335i crashd
Join Date: Apr 2009
Location: NYC

Posts: 6,777
iTrader: (4)

Exact reason why I will stay away from aftermarket exhausts for the m3

Besides costing a shit load of money and droning..the OEM exhaust mod is the best bang for the buck and will sound perfect for a street driven M3
tibra1 is offline   No_Country
0
Reply With Quote
      01-16-2012, 08:47 PM   #22
aus
Major General
 
Drives: Odysse
Join Date: Jul 2005
Location: Seal Beach, CA

Posts: 7,321
iTrader: (5)

I've had experience with adding resonators vs. Heimholz chambers and the chamber do a MUCH BETTER job with drone. You just need to have the space to add them on.

.
__________________
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
aus is offline  
0
Reply With Quote
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 -5. The time now is 10:43 PM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, 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