New owner of a 17,000 mile '08. Goes like a raped ape , and no tickets yet. Last owner put a set of 4.10's in it and it whined like a mother. I just replaced the 4.10's with some Ford Racing 3.55's and it's worse. The install was perfect. New bearings, shims, races, etc. I've read a bunch of posts and it seems like this is a problem that just doesn't go away. Short of putting in a 9" , does anybody have a cure ?
