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      11-08-2009, 07:02 PM   #1
Periokid
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Drives: 2015 F80 M3
Join Date: Apr 2009
Location: LI, NY

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M3 exhaust modification

Subw00fer has inspired me.

His phenomenal exhaust system has motivated me to try a mod of my own.

My idea was post #197 on this thread located here: http://www.m3post.com/forums/showthread.php?t=253661

Basically I wanted the sound without the actuators. Not nearly as cool as the Bates Prototype Valvetronic Exhaust, but something I want to try.

The idea is to open the absorption chambers, take out the absorption material and seal the perforated pipes. I am not sure what to expect but I am hoping to get some sound similar to the Bates Prototype.

My first step was to obtain a used unit. Thanks to Space Ghost, that step was completed today with a deal in a mall parking lot which quickly brought over security thinking we were doing a drug deal!

Next I cut open the chambers and pulled out a mile of material. It was almost comical. It just kept coming out and was endless. Then I removed the steel wool like material from each side covering a small section of two pipes. Now I have clean chambers and exposed perforated piping. My plan is to wrap the pipes with header wrap and seal the chambers.

Here are some pics:
Attached Images
  

Last edited by Periokid; 01-26-2015 at 10:48 AM..
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