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Old 08-31-2012, 10:08 AM   #3
Registered User
Join Date: Jan 2012
Location: Philly
Posts: 93
My Ride: 00' 328i
IMO I'd go with a 2 1/4 or 2 1/2 straight pipe catback with headers if u got them. If u have a cel delete or whatever. I don't like the check engine light on so I'm currently running a cutback behind the sensor straight pipe. Best breathing IMO and cause I still have pre cats an cat it's not annoying loud. Sounds like a deeper m3 from what I got. 328i intake and alittle other things. Sc will b in soon
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