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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > minor ringing noise

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      03-09-2020, 06:54 AM   #1
D CHOI
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minor ringing noise

Near the radiator is a minor ringing noise and is only there during idle. Can barely hear it only in garage and not noticeable in the streets. When applying throttle it goes away. I asked 2 techs and they said seems normal. I have bm3 stage 2 tune with acn 91 gas mixed with 100 Octane. VRSF FMIC and charge pipes.

The car drives fine and loving the gains from the tune. Perhaps if I flashed back to stock it will go away? Not sure what to expect but noise doesn't seem threatening.
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      03-10-2020, 02:19 PM   #2
TemjinX2
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maybe its the water pump
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