Obviously I am biased since I use a quarterhorse. I am able to tune the car while it is running with my laptop and make data logs. The EGR is up to you, I deleted it myself and tuned it out, mainly for heat reduction purposes, running a PD blower comes at a cost and I did everything I could to keep intake air temps down. Not even sure if your combo needs the 24lb injectors, they may be a bit big for a GT40 combo.