[urstangsmoke]

about 3 weeks ago, i installed bbk long tubes on my 03 gt. everything was kick ass .. until today. it was fine on my way into work, then started it up on my lunch and a knocking-clanging was coming from underneath. i checked all the header bolts and h-pipe bolts, everything is tight and seems fine. it seems there is plenty of room between the steering column and header, and also the k-member and header. i think i have narrowed it down to the driver side header. it does this idle as well as in gear, and obviously gets faster as the rpm's go up. anyone have a clue or suggestion?