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      03-04-2009, 11:40 PM   #1
jk6672
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headers?

I'm new to this board and I have two questions.
I've had my E90 M3 since Oct. 31 of last year and I'm really happy with it, but now I thinking about doing some mods.
Has anyone developed headers?
What is everyone’s take on the Active Autowerke Signature Exhaust System along with the X Pipe and Connecting Pipes?
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      03-04-2009, 11:42 PM   #2
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http://www.m3post.com/forums/showthread.php?t=230470
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      03-04-2009, 11:46 PM   #3
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thanks for the link
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      03-07-2009, 12:06 PM   #4
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After looking at the OEM headers I would suggest you use the money for other power mods. The stock headers look like they're equal length and very well designed. Unless your doing internal engine mods (stroker, cams, etc.) I wouldn't waste the money on them.
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      03-07-2009, 12:18 PM   #5
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Quote:
Originally Posted by Bx Tpr View Post
After looking at the OEM headers I would suggest you use the money for other power mods. The stock headers look like they're equal length and very well designed. Unless your doing internal engine mods (stroker, cams, etc.) I wouldn't waste the money on them.
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      03-07-2009, 02:13 PM   #6
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I've mentioned this before, that the reason people bought aftermarket headers on the E46 M3 was because the primary cats were welded onto the headers. The E92's headers don't have cats welded onto them, thus they're much less restrictive. You're better off eliminating the secondary cats, resonators, and then getting high flow primaries. That's what I'm doing next week.
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      03-07-2009, 04:46 PM   #7
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You're better off eliminating the secondary cats, resonators, and then getting high flow primaries. That's what I'm doing next week.
X2

Is anyone having issues inspecting their cars with high flow cats and software tuning?
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