noise...
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If it's that whistle sound, it sounds like the IAC opening up to add a ton of air at startup and as the engine warms and idle air drops the IAC closes and the whistle goes away.
First time I heard it do that I though it was an accessory bearing.
The stock kid and baffles were designed to use acoustics to cancel that noise.
First time I heard it do that I though it was an accessory bearing.
The stock kid and baffles were designed to use acoustics to cancel that noise.