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      03-26-2012, 11:43 PM   #16
bdaddylo
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Drives: 2017 F80 M3
Join Date: Dec 2010
Location: Houston, TX

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So far I'm pleased with the Berks. The only way I can describe the exhaust note is that there's more sound if that makes any sense. In regards to the drone, it now sounds more like an exhaust note as opposed to a resonance. The drone RPM range has been reduced to 2,000-2,250. I plan on doing a dyno next week to see what the gains are.
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1991 E30 M3/Brilliantrot
2017 F80 M3/AW
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