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Old 04-20-2012, 09:08 PM
connerm connerm is offline
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Join Date: Jul 2003
Location: Northern Virginia
Posts: 1,070
do this

The flap on the crossover pipe actuates at low rpm and the flap on the intake actuates when rpms exceed 3500. Hook up a long piece of vacuum hose to the crossover flap and lay the crossover on top of the engine. Connect one of the electrical plugs to one side of the switch and start the engine. move the throttle linkage and watch the flap on the crossover pipe. If it opens at a low rpm, you've got it right. If not, plug the connector into the other side of the switch.
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