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Registered
Join Date: Jul 2008
Location: Central Washington State
Posts: 4,435
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Me, I would at least try grounding out the wire to the overboost switch....even though you have installed a new switch, it could be defective. At least take that possibility out of the equation.
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, B&B intercooler, stock 3LDZ.
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