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

Go Back   7Post - 7 Series Forum > BMW 7-Series Forums > (F01) 7-series General Discussions

Post Reply
 
Thread Tools Search this Thread
      07-29-2011, 08:52 PM   #1
eclou
New Member
eclou's Avatar
2
Rep
9
Posts

Drives: 911 turbo
Join Date: Jul 2011
Location: Houston

iTrader: (0)

The $0.50 exhaust mod

Decided to do some early work on the F02 today and started with hardwiring the V1 detector. Things went very simply thanks to the writeup by swisstype here. Just for kicks I put the car up on my 2 post lift and checked out the underbelly.



I played around with the exhaust solenoids and they look to be vacuum operated with a spring-closed by default design.



The actuator arms move pretty smoothly so I decided to try to clamp them open:

Clamp - I used a small hose clamp the size of your pinky:



Use a prybar or something similar to wedge the exhaust flap to the "open" position. As it sits open then put the clamp around the actuator arm at the elbow, holding it open. Here are pics of the clamps applied to the arms-

Passenger side:



Driver side:



Done:




Good news - this is cheap and easy to do - maybe 10 minutes, and reversible in 5 minutes.

Bad news - the amount of sound transmission increase is minimal. There is a slightly deeper tone at idle, but really marginal. I want/need more.



The exhaust runs from the manifolds up front back to two small resonator/cats then a merged resonator before hitting the mufflers. This run from just behind the manifolds is clamped in the front and welded all the way back. There are no oxygen sensors involved or visible in the entire section so it should be able to be swapped for straight or X- style middle section and then some mufflers in back.
__________________
2007 911 turbo
1997 911 turbo
1986 944 turbo LS6 conversion
Appreciate 0
      04-04-2013, 12:37 PM   #2
DBV
Captain
DBV's Avatar
768
Rep
958
Posts

Drives: G87 M2, G20 330d, Brabus Smart
Join Date: Mar 2013
Location: Berlin

iTrader: (0)

Garage List
2023 BMW M2  [8.75]
2018 Brabus Smart  [0.00]
2021 BMW 330d  [0.00]
Resurrecting this:

Do you have any sound clips of this?
Appreciate 0
      04-04-2013, 09:23 PM   #3
335aj
Private
Canada
6
Rep
94
Posts

Drives: beemer n benz
Join Date: Sep 2008
Location: Vancouver

iTrader: (0)

I would like to try this too, pics aren't working?
__________________
E93 M3 - W166 ML350 - F02 750li
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



All times are GMT -5. The time now is 10:23 AM.




7post
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