The BBK is a waste i have it on my car , It is a excellent quality piece but performance wise Nothing... It also gave me some IAC problem's which had to be tuned out...The only thing i probably benifited from is a faster opening cam on the throttle body but other than that i wouldn't bother with it..If i didn't sell my stocker i would of put it back on.... You are probably better off porting or getting a ported throttle body ...Neweraperformance.com does it on exchange basis for 75 buck's which seem's to be fav with people on LS1TECH ... End of August i think i am going to upgrade to a TPIS t.b. and Intake 3 friend's of mine are having better result's with it than the Fast t.b. & intake's plus it is cheaper i think..
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2002 Z/28 = Firemutt Racing 370 w/ Cam, Trick Flow heads, TPIS 90mm Intake & 90mm T.B., Vigilante 3600 t.c., Michael's Transmissions Built 4L60E.
QTP Headers, Mufflex Stainless Y-pipe, Pypes Performance Exhaust, Moser 12-bolt w/ 33 spline axles,Truetrac & 3:73's., Spohn.
Cartek Tuned...
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