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  1. vamprobozombie
    My father is performing the 2.8 to 3.4 swap and looking to add a FiTech EFI Go 3003 Throttle Body Injection. He has a modified intake manifold that takes a standard Chevy 4 barrel. Fires up good but finding 2000 rpm idle. Gets a little bit better 1200 rpm when disconnect vacuum advance on original distributor. Was wondering what is the ideal vacuum reference on that with original emission equipment eliminated. Looks like a standard Chevy HEI but wondering what adjustments need to be made to run it like this or should just pick up a new one. Vacuum measuring 17 inch from the Fitech going to validate that with a gauge. Verified fuel pressure is correct and having it recalibrate the idle air controller controller did not do anything. After I verify is hooked up right and and all readings make sense will be off to the Fitech Forum. 1986 Jeep Commanche
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