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      10-13-2021, 01:11 PM   #38
vetteflier
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Drives: 2021 BMW M4 Competition
Join Date: Apr 2021
Location: Colorado

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Good review by ///AVM. If I could conceive of a situation where I would want the exhaust valves closed--I can't--it would be worth $200. For those who want the option, go for it. I'm hoping the new s/w update will improve the sound even more, as some have claimed.
Appreciate 1
///AVM2529.50