« Reply #1 on: October 22, 2010, 11:16:25 pm »
The plug in that energizes with the ac system would be the one for the dashpot to increase the idle. I think the other plugin puts vacuum to the back side of the turbo wastegate which is deactivated by the microswitch on the throttle lever.
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Toyota truck 4x4 with Mtdi, M-vnt gt1749va, 11mm pump, fmic, smog .216 nozzles. Sold!
Working on 1993 4runner mtdi, gtb1756vk, 11mm pump, smog .216 nozzles, custom 1" thick adaptor plate, pd150 intake manifold.