Keep it Copacetic
Join Date: Feb 2004
Location: St. Louis, MO ||| Los Angeles, CA
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Performance wise the 328 is better. The M3 exhaust really does nto provide any performance gains, but rather impacts performance negatively because it's excessively heavy. It weighs close to 50 lbs, which is heavier than the 328 exhaust. On top fo that the exhaust hangers on the M3 are weak and poorly designed. They break easily and you may see yourself replacing them every 50,000 miles.
The Pro? It looks good, sounds decent for a stock exhaust. Is it enough sound ot make a difference? Yes, but to be honest the stock M3 exhaust will always get drowned otu by all other noises.
I recommend you just save up or look for a killer deal like swapping stock + cah for a good brand exhaust.
1995 BMW M3 Turbo - Dakar/Black