Quote:
Originally Posted by andrewn80
I have the whistle also on my 2004 z4 2.5i. It happens at low load ~2000rpm and goes away at anything higher or lower.
I checked my air intake and noticed it had a hole in the crinkle section. I was so happy to find that hole because I thought that would solve the problem. I fixed it and the noise is still there. Any other suggestions?
Did you guys fix yours?
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Hi Andrewn
Mine was the intake - i taped it up with electrical tape, as i remember, and it worked until the part came in. no more whistles since. Is your noise constant?
Mine only whistled when I exerted the accelerator, thus it was intake related. Try to narrow down when the whistle starts... stops... good luck... try tape in a few places to see if there are air leakages along the intake...