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I'll be taking my car into the dealer today to fix the front bumper (showed up off the trailer with the driver's side clips broken :\) and I'll see if my car is making the noise to have them comment on it. I'm 98-99% sure it's completely normal for the car, I'm just curious at this point what exactly it is. It could be the HPFP itself making the chirping sound since it's cam-driven, and at idle it could just be lower pressure in the pump. Seeing as most people only notice it after the car is warmed up, I'm leaning that direction as to what it actually is.
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