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11-01-2003 07:09 PM #1
Pro/Con of FULL racing exhaust system for E46 M3?
I was wondering about the Pros/Cons of a full racing exhaust system for the E46 M3?
I'm talking about real headers, no cats, straight through piping and some sort of aftermarket/racing muffler.
I am not worried about any emission laws.
-Have any of you done this?
-What kind of HP gains?
-What kind of impact would it have on the computer and what would I have to do to correct it?
Any and all info on this subject would be appreciated.
11-02-2003 11:32 AM #2
11-03-2003 12:03 AM #3
Re: Pro/Con of FULL racing exhaust E46 M3?
We race an M3 E46
1. You need rear cat simulators. Some keep a constant number. There is a set that will vary 2 degrees back and forth to give the computer the info it wants to read....So it does not go into limp mode. E 46 is very different.
The small Borla muffler is great. So you give up 4 HP... Straight exhaust is just annoying.
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