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Showing results for tags 'ez efi'.
Just bought the FAST EZ-EFI kit from Z Car Depot for my 1983 280zx. Put it on my car the other day and it runs worse than it ever has. Car will idle but is very hard to start and really rough when it's running. Using any more than 1/4 throttle will stall the engine. When I am able to rev the engine it's terribly rough. Feels like or an ignition timing issue. I know that when I removed the old EFI harness I disconnected a connector going into the distributor and the new harness did not have a connection to plug back in to the dizzy. Since adding the EZ EFI, ignition timing has retarded itself a