Does the vibration go away when your up to the speed you are going for and after your rpm's drop?? Do you have an aftermarket exhaust?? sometimes certain rpm's set off different vibrations in your car depending on how low or the frequnecy of the exhaust.
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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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