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      09-17-2020, 02:34 PM   #5
BaseBob05
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Drives: 2013 M5
Join Date: Aug 2020
Location: Tulare, CA

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Quote:
Originally Posted by vtune View Post
i believe cleaning of the valves, maybe with wd40
cool, thank you for the tip.

I was able to manually open the valves, had to fight the motor which was stuck, but got them fully open. Sound is AMAZINGLY better. I'm just gonna leave it like that for now. I'll eventually replace those cutouts but for now, the sound is nice and I'll leave them open.
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