On a 93 lt1 can you tune the computer with the chip still in the computer IF the chip is an aftermarket chip from PCM forless. I have a dual program chip set up from Pcmforless for my nitrous, but Im getting the car dyno tuned and the guy doesn know too much about 93's he only does 94 up cars. For some reason I can't remember the answer to my quesion.

Thanks,
Nick

 

The PROMM has to be removed.