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Old 06-11-2011, 12:44 PM   #31
derek0606
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Join Date: May 2006
Location: Houston
Posts: 930
My Ride: 01 330CI Orient
With our cars, its mainly for sound. The stock ecm automatically adjusts to exhaust and intakes which give a barely noticeable gain in HP. If u plan to get a tune from AA or somewhere else then it may give u a slight advantage. e46 cars mainly see exhaust restrictions in the cats which means a full header replacement. Hope this helps...

Quote:
Originally Posted by NightRaider93 View Post
So would the advantages of delete over stock exhaust be...

Less restricted airflow
Slight HP gain
Sound
Possible MPG gain?
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