Hi all ive got abit of a problem ive got Ba xt 03 and when im driving on the freeway at 100 and take my foot of the gas theres like 1 slight bang coming from the rear end of the car cant tell if its the diff or tail sharft .has anybody had this problem before. :?:

All I can suggest is change diff oil. I think it gets overlooked by too many people when considering what they need to do to maintain a car's reliability.