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Exhaust Info for Solo II Use.



I have a 95 M3 with numerous mods for SCCA street prepaired class.  Thos
include K & N, Upgrade Mass Air, chip, and AC cat back exhaust.  My
question is how much gain ( if any ) I might expect by replacing the
stock cat.  Yes. . . I know this means no street use.  My question has
to do with potential gains in HP or tourque.

All openions welcome, would like real time experience if possible.

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