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Old 11-12-2012, 07:23 PM   #1
Registered User
Join Date: Oct 2012
Location: Orange, CA
Posts: 16
My Ride: 02 325i
Question m3 stock headers on 325 m54b25

Hi everyone. So this is what I was thinking. I have a 02 325i. the Cat is going bad (rattling) and I am in need of new ones. I have looked at exhaust options, Headers w/cats, headers w/o cats w/ o2 sims, and oem/ aftermarket manifolds w/cats.

I was wondering if anyone has ever tried using m3 headers w/cats on a non-m car.

I know the flanges don't match the block so you would have to cut the old (325) flanges off and install on (m3) headers. not sure about section 2 alignment from (325)->(m3)

I have been thinking about taking on this project and I'm testing the waters to see if anyone has tried this before. Thanks

p.s. I live in Ca so Smog is a must, otherwise I would run 325 aftermarket Headers.

sbcrazy is offline   Reply With Quote
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