I have just recently installed Pacesetter Headers and they have been fine for the past month up until a couple days ago. When im in park or neutral and i rev the engine everything sounds fine and nice. But when i accelerate in drive there is this constant clicking noise that only clicks while accelerating. I've checked the bolts on my headers and they are tight as hell. I have no clue wat the sound is but it is embarassing. Does anyone no wat it can be?

 

The sound only occurs while in gear? Tranny?

 

It sounds like its coming from the headers tho, not the tranny

 

replace the header gasket. They probably came with the cheap paper ones and have blown allready.