I have been trying to track down a very loud top end rattle for weeks now . It sounded like a cam chain about to snap between 4 and 5 thousand rpm .
So the things I have done so far are :- cam chain inspected , CCT checked , Valve clearances checked , every nut and bolt checked for tightness . still there .... last resort I disconnected and blocked off the pipes for the clean air valve SUCCESS !!! Question is can I fit a resistor etc to the electrical plug and do away with it without bringing on the F1 light . Sorry for the long post . Thanks all