my exhaust has a rumble and there is no hole in the exhaust itself. would there be a leak or somthing somewhere else that would cause this. back fires sometimes but not often.
might be the exhaust gasket (gastket between exhaust and the head) - stick your head in the engine bay while she's running and see if it sounds a bit 'fluffy' - do it while it's cold and then you can touch around the gasket without burning yourself
might be a flange gasket too or where the pipes join.
same happened to me, i jus bought new extracters and exhaust system, it was probly the gaskets tho.
runs fine now
what about a slight leak where the exhaust manifold connects to the exhaust itself?
We got rep back, yaaay!