I recently bought some headers and i installed them myself and i made sure the manifold bolts were on there good. i then took my car (with open headers lol) to exhaust pros and had them weld my pipes together and then bolted to ball and socket flange header connection. Ever since then i have been tracking down a so called "leak". i found a tiny hole by one of the mufflers, but it made no change to sound. So i took it back to exhaust pros to check for leak but he said it was just valve tick sound comming through the exhaust system, and it was just louder because the pipes are thinner, but the pipes are not that much thinner, (btw they are made of caoted mild steel). So i took it to brakes plus because i have a friend there and we checked for leaks together with a shop rag, but nothing was found and he tod me the same thing as exhaust pros. But it just sounds like an exxhuast leak. Is the Ls3 well known for having loud exhaust ticking with headers? or something else? If so is there any way to fix that?
sound at
https://youtu.be/0e6CzOBxbzk