The car shifts fine with a 50 shot. I just had my tranny fluid changed and I'm adding a tranny cooler. Actually, the worst thing was hitting it from a stoplight cause I couldn't hook up for shit. For a 75 shot would I retard 2 degrees or 3? I already upgrade injector, fuel rail, and regulator-plus my cars running rich still. With a 75 shot should I invest in a new fuel pump and ignition?