so i took my wife to the dealer to pick up her windstar (new transmision installed) and while i was there i went over to my buddy and we hooked up the mustang to the wds and datalogged it long and short term fuel trims. the car is right on he was very impressed. so they did it CAI extra HP and NO TUNE REQUIRED, but we all now that as soon as i leave AFE on tuesday i will be stopping by shawn to have my tune retweeked!