what is exhaust resonation and why does it do it? any cure to stop it?
reason im asking is cos it sounds like my exhaust has been blowing at certain revs..it varies. got it checked out and all seemed fine, abit soot around the join at the backbox but nothing to worry about he said. thought the heatshield was touching the exhaust as its hanging down at couple of bits but apparently not! its just a standard exhaust with a backbox. anyone?