The factory GM modules are far superior to anything else. At least they used to be. We used to use Mighty Auto Parts at a tire/mechanic chain I worked for. Even their top of the line parts were the most cheapest horriblest parts ever. We learned quick and stuck with GM and the comebacks for failed parts on GM cars disappeared. Unless GM has changed something, I would stick with the GM unit. They were already performance. You ever been hit by an HEI plug wire? It'll knock your d!ck in the dirt.
