Originally Posted by
hyperfuxx
It's not rubbing against the back plate. There's no scuff marks. Sounds like a bee buzzing in a tin can. Not sure if reds pipes just sound funny. I'm rebreaking it in now. It's 175ish and ran almost a full tank in 30min on box.
i had this on a friends nova during run-in on the box, and guess what it was
??
it was just the fuel in the pipe from the engine running rich and the fuel made the pipe sound strange
