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Old 11-02-2011, 10:28 PM   #6
Rob43
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Join Date: Oct 2009
Location: Richmond VA
Posts: 2,550
My Ride: 2003 BMW 331Ci, 5spd
Quote:
Originally Posted by muhli View Post
Isnt that basically having 2 exhaust systems, one going out regularly and one going out open header or wherever you choose the cutout to be?

Yes.

http://www.summitracing.com/parts/SUM-670150-1/

http://www.summitracing.com/parts/SUM-670136/

What I would propose is for you to have a super quiet exhaust below WOT, but have a throttle body micro switch that activated your exhaust cut-out at WOT. The cut-out doesn't need to directly vent, it to can be muffled a little. The end result would be you'd have that extremely quiet exhaust until you nailed it, then it would scream.



Good luck.
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Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
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Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
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