i just swapped a z6 block with y8 head, using all oem parts like headgasket and timing belt......i also used arp head studs.....im using the a6 intake manifold......what would be better ecu for this setup, im using an msd rpm activated switch for vtec and its set at 5400, a y8 motor is set at 5500 so i went by that cuz of the head.......i have both ecus, but the pg7 runs good for the most part, but sometimes almost dies at idle.......thanks