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      06-27-2013, 04:50 PM   #11
Piets94
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Drives: 94 M3, AW 1M, M2 CS
Join Date: Jun 2013
Location: Australia

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Mine wasn't there from new either. Only noticed it from the leftish side of the engine bay after 3k kms and a good run-in from a long trip. I thought it sounded like my turbos were on the way out! At 3000?! Been there ever since, boosts hard. Post a sound clip and I'll confirm if it's the same
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