No, I noticed the speed difference at 30mph and again at 50mph there was a 7-8mph difference both times two times when I was at steady speeds is when I noticed, I was not looking for it the number was the same as far as the speedo being off, again I did not go over 50 until I changed the gear ratio later that day. Maybe I do have a crappy GPS
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2010 Camaro SS Whipple SC, CAI Inc Intake, TSP 1 7/8" LT headers no cats, 3" magnaflow exhaust, HPT, RX Catch Can, LSR Toe Rods, LSR Trailing Arms, ALKY Control Meth, McLeod RXT Twin Disc, ZL1 fuel pump, 3.73 ZL1 Differential Kit, BTR PDS Stage 2 Cam, Tuned by SLOWHAWK Performance Bridgewater MA
