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      05-31-2021, 12:21 PM   #28
vetteflier
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Drives: 2021 BMW M4 Competition
Join Date: Apr 2021
Location: Colorado

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That makes sense, LB. The valve shouldn't freewheel on the shaft, and if it is who knows what position it will end up in. Certainly would explain the rattle. AVM--they are available from AWE and CG Precision--VSC-2. But no way I was going to spend 2-300$ for one that could be duplicated mechanically for free. Very pleased with my freebie mod that vastly improved the one complaint I had with the M4C--exhaust note, and wanted to share it with the forum for those interested. Everyone can make their own decision, and leave it stock, do my mod, or get an electrical controller as they choose. At the end of the day, hopefully we're all happy with the choice.
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///AVM2529.50