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      06-27-2013, 10:46 AM   #8
Bönz
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Drives: 2018 M5
Join Date: Jan 2012
Location: Michigan

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Why not wire the GTC valve into a vacuum switch so that it opens and closes under the same conditions as the factory system without the need for driver activation. With one extra wire and a 3-position switch the sytem could be wired for on, off and automatic.
Appreciate 0