04-09-2018, 03:47 PM | #1 |
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Exhaust valve
Hi I've got a quick question regarding the exhaust valve on my new 540i xdrive, is there any downside to having it permanently open i.e. power loss?
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04-09-2018, 10:10 PM | #2 |
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Drives: BMW
Join Date: Aug 2007
Location: 49417 and 60610
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