My 2004 does that too. a clear whistle that sounds like its coming from the front end but if im going fast it either stops or i just cant hear it. i thought it was the intake but im not too sure. dont ever have any performance problems and i think it sounds quite cool so it doesnt bother me at all. sounds like a turbo whistle or something :-) If you find out what it is though, do let me know.
ive just had a full service so i really doubt its the valves
does it not do it if you're at steady revs? if im just plodding along at low speeds it does it continually
Last edited by d1andonlyantman; 04-19-2012 at 12:20 PM.