My camaro i just bought has a speed limiter at 85 mph and we have tried everuthing to take it off. The only things we are thinking it could be is my after market suspension. Previous owner put on coilovers and lowering springs. Also it thinks all my tires are flat because the rims it has on it dont accomodate a tps system. Has anybody else run into this problem? Or have any suggestions on how to fix it? Preferably without changing the suspension.