check one other thing also. Throttle bodies can come loose and cause an air leak, make sure they are mounted all the way down, best way to make sure is with a flashlight open the throttle and look down the throat and see if their is a gap between the aluminum and the plastic intakes, should be no gap at all, loosen up lower clamp push down until properly seated and tighten snugly, becarefull not to over tighten or you could split the rubber sleeve.