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Strange Noise When Starting Up

24K views 61 replies 37 participants last post by  e4w  
Do you have an aftermarket intake? I believe my CP-E intake always makes that sound on startups when it's cold.. like a quick whirring noise when the car is first turned on.
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I think our sound might be different. I think......

I will make a recording of the sound when I start my car in the morning just to verify this.