hey guys, today I noticed that my car makes this VERY faint whistling sound with the rpm as the rpm goes above 4k. Is it a slight vacuum leak you think? If so, I guess I would have to hunt it down. Any useful ways to hunt down vacuum leaks? BTW, again it is extremely faint. And doesn't happen all the time.
-saaby
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Red 99 SE with: CAI, Stillen Front STB, Redline MT90
-saaby
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Red 99 SE with: CAI, Stillen Front STB, Redline MT90