Quote:
Originally Posted by TopJimmy
These cars already have big pipes so running with valves closed is not going to hurt anything…even in sport modes. Just don’t go racing.
OP can simply disconnect his valves when the car is off, and try running “full quiet”. I would suggest to have the exhaust button coded off, so no burbles or fake interior sound either.
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I was told that having valves closed and stomping on gas may damage valves or something else due to back pressure. I have Dinan valve controller and and only have open or close features so I may switch controller with more options for oem.