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      01-04-2020, 06:45 AM   #82
Simon H
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Drives: M5 Competition
Join Date: Mar 2010
Location: UK

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Quote:
Originally Posted by christianm82 View Post
PCW Exhausts will sort you out
If Paul removes, or gutts the OPFs, the car will still need mapping, therefore voiding the warranty, and its the OPFs that are the cause of the noise reduction.Although saying that, im not up to speed yet, on this new software theory, of quietening the car down. I dont think there is an easy route to take on this subject ?
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