Well right now the motor is still original except for the air clearner that was put on. The next upgrade will be a full exhaust from the headers back that will delete the cat and a.i.r. system as well. The vats has the resistor bypass done to it, so what does the chip do to the vats? And are these chips re programmable for other changes that are made later on such as transmission rebuild kit, upgraded torque converter, drive shaft and rear axle.