don't forget on the 4.8is there are 2 timing chains and 2 vanos sensors...........also every time You adjust the suspension You have to re code the suspension, it doses effect the idle and throttle body[believe it or not]...............speaking of the idle if You change the Air filter or touched the MAF sensor You have to re code..................

__________________
2006 4.8IS
65K MILES
PURCHASED 7/13