Have been having engine problems for a while on my 95 Z28 and all the garages I went to were pretty useless and told me to change everything. I finally found this guy that does tuning and he was able to trace the problem to the optispark. So got it fixed and decided to get tuning too.

I got basic calibration, full throttle, part throttle. He hooked up a wideband O2 and other sensors for datalogging. Even had an accelerometer to measure the difference! The car is definitely performs better after. Transmission shifts are firm and throttle response makes it feel like a lighter car. I should have done this when I first bought the car.

Anyway, their website is www.revtronix.com. If you need PCM tuning I would go to this guy.