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      05-22-2022, 06:10 PM   #7
BozoBlaster
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Drives: E28 1984 533i, E92 2007 335i
Join Date: Jul 2021
Location: Pacific Northwest

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BMW 335i  [0.00]
I have narrowed it down to start at about 60 miles an hour in 5th gear, with low load, below 3.5k-3k rpm, cruising. It's hard to hear it with the drone of my exhaust and with the catless DPs it's even louder but you can sure feel the "brr-brr-brr-brr-brr-brr", consistent and even but gets faster as I accelerate.
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