If you have any rattling, sizzling,vibrating, or othewise annoying metallic humming noises coming from your engine/transmission area , check the forward cat heat shields especailly on the passenger side, mine were just re-welded and the difference is incredible, I now can hear a nice smooth rev and actually hear the "whir of the 32 valves" as the 2001 Cobra catalog states.
This is on the factory Hpipe mind you.
This is on the factory Hpipe mind you.