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 > Track / Autocross / Dragstrip / Driving Techniques
 
GetBMWParts
Post Reply
 
Thread Tools Search this Thread
      02-24-2013, 02:38 AM   #1
Alekshop
BimmerPost Supporting Vendor

 
Alekshop's Avatar
 
Drives: M3 l M5 l X5
Join Date: Nov 2009
Location: Bay Area

Posts: 2,225
iTrader: (8)

Send a message via Skype™ to Alekshop
If the Exhaust is too loud - Here is your solution

As some tracks have sound restrictions we had to make our Akrapovic GT4 system quitter to pass the sound ...

Here is your solution





Aleks.
Alekshop is offline   United_States
0
Reply With Quote
      02-24-2013, 06:15 AM   #2
///M Power-Belgium
Colonel
 
///M Power-Belgium's Avatar
 
Drives: ///M3-DCT- E92 Silverstone II
Join Date: Jul 2012
Location: Belgium

Posts: 2,915
iTrader: (0)

Attached Images
 

Last edited by ///M Power-Belgium; 02-24-2013 at 06:31 AM.
///M Power-Belgium is offline   Belgium
0
Reply With Quote
      02-24-2013, 09:05 AM   #3
Gearhead999s
Major General
 
Gearhead999s's Avatar
 
Drives: E93 335is(wifes)E92 M3
Join Date: Apr 2007
Location: Toronto

Posts: 6,677
iTrader: (0)

Supertrapps are real bad for power but depending on the disc setup can do a good job of quieting things down.We used them over 20 years ago on our racecar & went to Flowmasters to meet the noise regs.I am suprised that Supertrapps are still used.
Gearhead999s is offline  
0
Reply With Quote
      02-24-2013, 10:50 AM   #4
Raucky2000
Lieutenant
 
Raucky2000's Avatar
 
Drives: SGM E90 M3 dct
Join Date: Nov 2012
Location: Ohio

Posts: 483
iTrader: (3)

...In this order and that person shouldn't be allowed to mod cars again.
Raucky2000 is offline  
0
Reply With Quote
      02-24-2013, 11:37 AM   #5
Porschefile
Major
 
Porschefile's Avatar
 
Drives: E92 M3
Join Date: Jul 2008
Location: Tennessee

Posts: 1,213
iTrader: (6)

That looks horrible
Porschefile is offline  
0
Reply With Quote
      02-24-2013, 11:42 AM   #6
1MOREMOD
2014 Track Days - 6|Ridge 1:54:61|Pacific 1:35:72
 
1MOREMOD's Avatar
 
Drives: Race car->
Join Date: Mar 2009
Location: check your mirrors

Posts: 11,612
iTrader: (5)

looks pretty bad. if it was a quick disconnect just used at the track that would work. are the angled sideways to direct sound away from the db booth?
__________________

02 Tiag e46 M3|6MT|GC plates|MCS c.o.|GC bars|GC race control arms|GC bushings & bearings|BW eng. & tran. mounts|subframe kit|BW race shifter|BW Jaffster|Euro header|BW race|K&N c.a.i.|Epic race tune|Rouge pulleys|Seibon CF hood|CSL bumper|ST-40|XR-2|SS lines|half cage|Recaro profi|Profi 2 harness|BMWpedals|BW studs|
1MOREMOD is offline   United_States
0
Reply With Quote
      02-24-2013, 12:18 PM   #7
radiantm3
Apex Everything!
 
radiantm3's Avatar
 
Drives: >1000 HP in my garage
Join Date: Sep 2008
Location: Danville, CA

Posts: 3,709
iTrader: (5)

Garage List
2011 E92 M3  [4.79]
2013 BMW X5M  [4.33]
They go on in minutes at the track. You guys who don't like them obviously never been to Laguna Seca. there are a ton of 90db limit days this year. My akra evo won't pass sound. And many stock cars don't pass either.
radiantm3 is offline   United_States
0
Reply With Quote
      02-24-2013, 12:30 PM   #8
spdy330
Major General
 
spdy330's Avatar
 
Drives: 05 Tundra, 11 M3, 08 Odyssey
Join Date: Dec 2009
Location: Chino, CA

Posts: 5,944
iTrader: (159)

Garage List
Send a message via AIM to spdy330 Send a message via Yahoo to spdy330
I am not feeling it either, but at least it is only on for the track.
__________________
- 2006 E90 330i TiAG retired.
- 2011.75 E90 M3 - BMW Performance Exhaust, BMW Performance Grills, Lux H8 V3, Reflector delete Euro style, Ceramic Tint 58%, Brembo 380mm BBK, V1 with custom multi-color display by www.Radar-Mirror.com - custom radar mount by www.performancepackage.com.
spdy330 is online now   United_States
0
Reply With Quote
      02-24-2013, 12:31 PM   #9
tbone28
vvvvvvvvvvvvvv
 
tbone28's Avatar
 
Drives: ^^^^^
Join Date: May 2012
Location: Bay Area, CA

Posts: 1,946
iTrader: (12)

:

tbone28 is offline   United_States
0
Reply With Quote
      02-24-2013, 01:26 PM   #10
klammer
Brigadier General
 
Drives: 11 spc gry m3 e90, 07 X5
Join Date: Jan 2010
Location: chicago

Posts: 3,219
iTrader: (0)

I find it ridiculous to have noise restrictions at a race track...WTF, its a RACETRACK!!!
__________________
mods: akra evo, dinan 3.45 diff, ess akra tune, dinan stg.3, Alcon bbk, HRE P40
klammer is offline  
0
Reply With Quote
      02-24-2013, 01:32 PM   #11
///M Power-Belgium
Colonel
 
///M Power-Belgium's Avatar
 
Drives: ///M3-DCT- E92 Silverstone II
Join Date: Jul 2012
Location: Belgium

Posts: 2,915
iTrader: (0)

tbone28 ...Jesus...now i'm sure...you are the best joker on this forum !
My stomach hurts from laughing....
And i was thinking...that i was funny,with the monster out of space !
///M Power-Belgium is offline   Belgium
0
Reply With Quote
      02-24-2013, 01:36 PM   #12
1MOREMOD
2014 Track Days - 6|Ridge 1:54:61|Pacific 1:35:72
 
1MOREMOD's Avatar
 
Drives: Race car->
Join Date: Mar 2009
Location: check your mirrors

Posts: 11,612
iTrader: (5)

is that beer can exhaust?
__________________

02 Tiag e46 M3|6MT|GC plates|MCS c.o.|GC bars|GC race control arms|GC bushings & bearings|BW eng. & tran. mounts|subframe kit|BW race shifter|BW Jaffster|Euro header|BW race|K&N c.a.i.|Epic race tune|Rouge pulleys|Seibon CF hood|CSL bumper|ST-40|XR-2|SS lines|half cage|Recaro profi|Profi 2 harness|BMWpedals|BW studs|
1MOREMOD is offline   United_States
0
Reply With Quote
      02-24-2013, 03:17 PM   #13
tbone28
vvvvvvvvvvvvvv
 
tbone28's Avatar
 
Drives: ^^^^^
Join Date: May 2012
Location: Bay Area, CA

Posts: 1,946
iTrader: (12)

this is one part of the car scene in japan. It was the 1st thing that came to mind when I saw the original post









Quote:
Originally Posted by 1MOREMOD View Post
is that beer can exhaust?
Miller for car shows, Miller Lite for the track

Last edited by tbone28; 02-24-2013 at 03:28 PM.
tbone28 is offline   United_States
0
Reply With Quote
      02-24-2013, 03:23 PM   #14
Mr. ///M3 RD
Major General
 
Mr. ///M3 RD's Avatar
 
Drives: E350 & 280 SL on Weekends :)
Join Date: May 2010
Location: GTA, Ontario - Canada

Posts: 7,862
iTrader: (0)

Garage List
What do we think of next
__________________
Cheers, Rolf-Dieter

Life will take us to some interesting places, fortunately The ///M3 will too with a many of us know this very well
---> Click here for some good stuff I found
Mr. ///M3 RD is offline   Canada
0
Reply With Quote
      02-24-2013, 04:39 PM   #15
///M Power-Belgium
Colonel
 
///M Power-Belgium's Avatar
 
Drives: ///M3-DCT- E92 Silverstone II
Join Date: Jul 2012
Location: Belgium

Posts: 2,915
iTrader: (0)

These can count also
Attached Images
      
///M Power-Belgium is offline   Belgium
0
Reply With Quote
      02-25-2013, 12:41 AM   #16
NRBRNG
Private First Class
 
NRBRNG's Avatar
 
Drives: 2009 E92 M3, DCT, SG.
Join Date: Jan 2011
Location: OREGON, USA

Posts: 199
iTrader: (8)

Quote:
Originally Posted by klammer View Post
I find it ridiculous to have noise restrictions at a race track...WTF, its a RACETRACK!!!
Agree 100%. Oktoberfest at Laguna this year would be great, but with 92 db what's the point? Rant over...
__________________
SG, DCT- Diffsonline 3.62 triple ramp.
MCS 2-way, GC race CP, TMS solid subframe/Diff bushings, RD sway bars, Akra catless GT4, BPM tune, welded half cage/door bars, Recaro Profi's /Schroth 6 pts, Stoptech ST60/ Cobalt XR1/2 race pads, Apex ARC 8's, Yoko A005 slicks, RKP GT4 Splitter, APR GT250 Wing, BMC filter, BW race F CAB's, Dinan R Toe Links, Mini CS battery, Aim DL, Dry-3100 pounds
NRBRNG is offline  
0
Reply With Quote
      02-25-2013, 01:11 AM   #17
Tim B.
Lieutenant
 
Drives: 2010 Jet Black E92 M3
Join Date: Dec 2009
Location: Baton Rouge, LA

Posts: 544
iTrader: (0)

Quote:
Originally Posted by klammer View Post
I find it ridiculous to have noise restrictions at a race track...WTF, its a RACETRACK!!!

This +1000000000
Tim B. is offline  
0
Reply With Quote
      02-25-2013, 10:45 AM   #18
THE TECH
BimmerPost Supporting Vendor

 
THE TECH's Avatar
 
Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

Posts: 13,010
iTrader: (42)

Garage List
Send a message via AIM to THE TECH Send a message via Skype™ to THE TECH
It's interesting that they even need noise restrictions since Laguna Seca is nowhere near any housing tracts.
__________________
THE TECH is offline   United_States
0
Reply With Quote
      02-25-2013, 11:11 AM   #19
dnvrdrvr
Captain
 
dnvrdrvr's Avatar
 
Drives: JB E90 M3
Join Date: Jul 2009
Location: Denver, CO

Posts: 758
iTrader: (2)

Quote:
Originally Posted by THE TECH View Post
It's interesting that they even need noise restrictions since Laguna Seca is nowhere near any housing tracts.
Maybe they think the noise will bother the grapevines?
__________________

Just a girl and her 420 ponies...
www.mw3motorsports.com
dnvrdrvr is offline   United_States
0
Reply With Quote
      02-25-2013, 11:46 AM   #20
Car54
Captain
 
Drives: 1999 Z3 Mcoupe | 2008 M3/4
Join Date: Sep 2007
Location: Lutz, FL

Posts: 837
iTrader: (1)

^ this

All of the essence would be removed by sonic waves. <rolleyes>
__________________

Craig Brickner
BM
W CCA/PBOC/Chin Motorsports DE Instructor
Click to Join: BMWCCA # 366493
Car54 is offline  
0
Reply With Quote
      02-25-2013, 12:00 PM   #21
Gearhead999s
Major General
 
Gearhead999s's Avatar
 
Drives: E93 335is(wifes)E92 M3
Join Date: Apr 2007
Location: Toronto

Posts: 6,677
iTrader: (0)

Quote:
Originally Posted by klammer View Post
I find it ridiculous to have noise restrictions at a race track...WTF, its a RACETRACK!!!
This is just the tip of the iceberg.I can think of a few tracks in our local area that have noise restrictions.Noise was a huge problem for our newest track to get goverment approval thanks to the local NIMBY's. that live around it.A loud street exhaust will pass with no issues.

Quote:
SOUND MANAGEMENT & RESTRICTIONS


All Participants must adhere to the mandatory noise restriction of 92 dB or lesser without exception. Calabogie Motorsports Park will measure noise levels of ALL vehicles and/or equipment prior to being granted access to the track.

In today’s Motorsport activities, sound management a joint task shared by all members including tracks, clubs, participants, promoters and even fans. As an established motorsports facility, Calabogie Motorsports Park (CMP) has imposed its own noise guidelines, testing procedures and maximums to ensure CMP creates a favourable environment for all.
1.Screening Test – After a brief visual muffler check, a stationary test is undertaken. Sound levels will be measured 15 feet in front and behind the vehicle while the engine is revved at the maximum allowable rpm or the red line of the tachometer. ◦Cars, the average should be no more than 100 dbA with no single reading over 104 dbA.
◦Motorcycles, the average should be no more than 98 dbA with no single reading over 100 dbA.

2.Pass-by Test – With the vehicle under full acceleration on the track, a reading will be taken from 50 feet. The maximum level allowed is 92 dbA. This level and standard is the most commonly used in North America and Europe and is where the entire industry is headed. Tests are valid for 9 months unless modifications to vehicle are made.

Cars and motorcycles that do not meet the noise criteria in the pass-by test will be black flagged and will not be allowed to run until modifications have been made and a re-test performed to ensure compliance with the guidelines. It is the driver’s responsibility to ensure their vehicle meets the noise restrictions that Calabogie Motorsports Park has in place.
Gearhead999s is offline  
0
Reply With Quote
      02-25-2013, 12:53 PM   #22
WarrantyTracker
Track? What Track? I was just riding along . . .
 
Drives: Alpine White E92 M3
Join Date: Apr 2012
Location: An Undisclosed Location

Posts: 534
iTrader: (0)

Quote:
Originally Posted by 1MOREMOD View Post
is that beer can exhaust?
Hmm, when I was little Dad used to have a 55 Chevy wagon which used metal cans from frozen orange juice concentrate as an actuall part of the exhaust. They were the right diameter, and held up pretty well.
WarrantyTracker is offline   United_States
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 10:21 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