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beemteam1001 · 09-03-2008, 09:09 PM

i got a AA tuning high flow cat and from the headers to the new cat is all stock pipes.
Should i upgrade them for more airflow and will it give it better sound?

Thanks

09-03-2008, 09:09 PM	#1
beemteam1001 Registered User Join Date: Aug 2008 Location: catonsville, MD Posts: 271 My Ride: E46 323i View My Garage	exhaust i got a AA tuning high flow cat and from the headers to the new cat is all stock pipes. Should i upgrade them for more airflow and will it give it better sound? Thanks