Factory gauges with aftermarket efi.?
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Factory gauges with aftermarket efi.?
I have a 98 gmc 3500 I want to do an engine swap and ditch the L29 454 in favor of a 502. That crappy intake isn't going to work on my application. I would like to know how to retain factory gauges if I switch to a holley efi setup. I'm assuming if you run the factory ecm as a dummy its possible. Some pointers would be greatly appreciated.