My car makes power to 7k but it runs best when I shift before 6500rpms.
Mark
Steel City Terminators
'04 Black Cobra
663RWHP / 665RWTQ
6350.99999999 if it's a good day, 6351 on a slow day
Whipple Supercharger w140ax, Billet flow idlers, 3.5 upper, 4lb Metco lower, Pfab IC tank, Accufab throttle body, Jlt Intake, KB Boost-a-pump, Bassani X pipe w/ cats, Bassani cat back, Lakewood 70/30 front struts, Centerforce dual Friction clutch, Fidanza Flywheel, Billet flow irs brace, H&R race springs, Autometer Boost/Fp/Dynojet Wideband Commander, Xcal 2 tuned by Greg@Ret.
I shift around 6200 which seems to work well with my car.
2004 Redfire Cobra, #583/3768, Born 11/26/03
2.8 KB numbers coming soon....