To answer your question.......... My '98 M3 runs a Dinan SS exhaust w/ cold air and chip... Its sounds absolutely incredible. Deep, throaty, mean and definitely turns the rice burners heads and any other motorhead when I open it up. Was dyno'd at 275HP.
It is quiet and a bit throaty at normal speeds and driving. Not an attention getter UNLESS you romp on it. Definitely worth considering.
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