ok so I have gotten my car Dyno tuned for the following mods I've done: ford racing intake, bbk throttle body, jlt cold air intake, 39lb ford racing injectors, comp muther thumper cams, jba long tubes and high flow catted H pipe, tci 3000 stall converter, under drive pulley kit, cam phasers. Got the car back from the Dyno shop and it ran awesome for about 50 miles. Can't keep the car from heavily surging while slowing down to a stop. Rocks between 400-1200 Rpms hunting for idle till I stop fast enough or it stalls. I've adjusted the drive idle twice and does fine for a little while and then the problem comes back. Also getting a bad stalling condition going from park to either reverse or drive- acting like it did before the converter went in. Again takes drive time for these issues to come out. Anyone have any clue??? I know they are big cams but that can't be how they act
08 mustang gt 4.6 automatic 60k
08 mustang gt 4.6 automatic 60k