JimC re: AC idle-up: The AC idle up gets a vacuum hose from a dedicated fitting on the power brake fitting, goes direct to the idle up solenoid, then direct back to the idle up pot on the carb. [The AC idle-up solenoid is] the solenoid that has 2 vacuum connections (not 1, not 3), and is not mounted w/all the smog solenoids on the smog platform on fenderwell. AC solenoid is usually mounted to the vertical inner fender under a 6mm bolt. JimC re: why the distributor needs to be re-curved: The stock dissy curve is set for use with EGR. EGR slows the speed of combustion, so the ignition point must happen earlier to allow time for the retarded mixture to burn.
When the EGR is inoperative, the flame front moves faster, so the dissy needs to be recurved to slow down the advance. JimC re: emissions computer removal: The only thing the emission computer is doing now is controlling decel fuel cut. If the green wire mod is performed, then the computer is completely out of the picture and can be removed. JimC re: removing the EGR valve and cooler: Leave the EGR valve & cooler in place until you definitely have a way to deal w/ removing it permanently. If there is no vacuum to the EGR valve, then the EGR system is dead. The big reason for removing EGR is cosmetics. It looks better without all that non-functional hardware hanging off the manifolds.
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