If the Thrasher doesn't work in your car it's because your car has problems or it is too far from stock! Thrashers have an open loop idle which means it doesn't compensate for vacuum leaks or added aftermarket parts! It was extensively developed for a stock TR in good running condition. Throw in a different cam, turbo, heads or some vacuum leaks and it will probably SEEM like the chip is crap. For a stockish car, the Thrasher is the best chip available. It just so happens to cost the least.