gather data then have it reburned
Believe it or not.. this is the most important part.. yet call after call I get.. it is assummed when you buy a chip it is PERFECTLY calibrated to your engine first time out.. I hear the "I told him I have X,Y,Z in the engine.. He should know exactly what I need"

Cant tell you how many times I hear.. "Its got an X chip...." and either it works or it doesnt.. expecting a miracle.