I had an interesting discussion with someone this weekend about whether reprogramming the prom can really help a stock engine (one without any performace mods) run better. I think reprogramming for a stock engine can help performance. This other person feels that the manufacturer (GM) had the prom setup from the factory with the best performance a stock engine could produce.

Any comments?

An oem prom is designed for the most common denominator. If you, never maintain your car, run garbage for gas, and have no want for CORRECT is then the oem chip is fine. They are a miracle of engineering, but just have to work well on anything that comes down the assembly line, and gets anything in the way of maintance.

You can't begin to appreciate what a CORRECT chip means, till you've been there. If you like an engine tuned to the way you drive.

Some *tuners* are just happy with the way the chips come, me, I like them only after a getting them dialed in to the way I like.