BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Today's Posts


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
BPM
Post Reply
 
Thread Tools Search this Thread
      06-28-2012, 05:08 PM   #1
Fen335i
Captain
Fen335i's Avatar
107
Rep
805
Posts

Drives: e92 M3 / X5d / Z4 M Roadster
Join Date: Jun 2008
Location: Pacific Northwest

iTrader: (0)

test pipe length

For those that have done the Turner Test pipe mod, or had a muffler shop weld in their own pipe to remove the primary cats, do you know how long that section of pipe is? My shop doesn't have stainless steel pipe, so I need to pick some up and bring it to them to be welded on. I believe it's 2.5 inch diameter, but not sure of the length. Of course I could jack the car up and take a measurment, but that would be too much work. ;-) Figured someone here that's done this would know.

Or, my other option is to use standard 14 guage aluminum muffler pipe. Any downside going this route instead of stainless? It won't look as good, but no one is going to see it anyway.

Thanks.
Appreciate 0
      06-28-2012, 05:23 PM   #2
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
307
Rep
13,093
Posts


Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
The stock piping is 2.58" OD. For replacing the primaries, you will want 14" for each side give or take a half inch.
Appreciate 0
      06-28-2012, 05:39 PM   #3
Fen335i
Captain
Fen335i's Avatar
107
Rep
805
Posts

Drives: e92 M3 / X5d / Z4 M Roadster
Join Date: Jun 2008
Location: Pacific Northwest

iTrader: (0)

^ Thanks Tech. Any idea what the downside of using standard aluminum muffler pipe would be instead of stainless steel?
Appreciate 0
      06-28-2012, 05:41 PM   #4
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
307
Rep
13,093
Posts


Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
Quote:
Originally Posted by Fen335i View Post
^ Thanks Tech. Any idea what the downside of using standard aluminum muffler pipe would be instead of stainless steel?
You can't use aluminum but you can use aluminized steel. There is no power drawback. The aluminized just doesn't have the same life expectancy as stainless. It will eventually rust from the inside out. Still it's not a big deal and nothing you will probably every know.
Appreciate 0
      06-28-2012, 05:45 PM   #5
Fen335i
Captain
Fen335i's Avatar
107
Rep
805
Posts

Drives: e92 M3 / X5d / Z4 M Roadster
Join Date: Jun 2008
Location: Pacific Northwest

iTrader: (0)

Thanks, yea I should have mentioned it would be aluminized steel (what the muffler shops use all the time). Sounds like maybe I should just go this route. Rounding up stainless steel pipe may be a pain anyways... Thanks much for the info.
Appreciate 0
      06-28-2012, 06:04 PM   #6
THE TECH
BimmerPost Supporting Vendor
THE TECH's Avatar
307
Rep
13,093
Posts


Drives: BPMsport 2012 E92 M3
Join Date: Jun 2011
Location: Kansas

iTrader: (45)

Garage List
Quote:
Originally Posted by Fen335i View Post
Thanks, yea I should have mentioned it would be aluminized steel (what the muffler shops use all the time). Sounds like maybe I should just go this route. Rounding up stainless steel pipe may be a pain anyways... Thanks much for the info.
Glad I could help.
Appreciate 0
Post Reply

Bookmarks


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



All times are GMT -5. The time now is 04:58 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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