strange noise like a bump, its happen ever 10 seconds like something is rubbing against the frame after my z was service, the working only replace the oil and firter but he jack up my z which has a low side skit(full bodykit) yes he also made a dent. i send them email because they are close, i should have inspect it before i leave but i trust them, i went to the same dealer since i got my z back in 2003 and never had any probem until now. i rush home to detail my z for canada day in ottawa and i live in newmarket(near toronto). i'm going to drive my z to ottawa to see if the problem get any worser so i can ***** at the dealer. to bad i won't be back until july 3 07. they better give me a phone call. any advice should i bomb the dealer