Fuel Air Spark Technology - EZ-EFI
|
One thing the EZ-EFI system does require is an engine speed input, but that's not a problem either 'cuz there's two ways to accomplish this. First, if you're running an aftermarket CD ignition box all ya do is plug in the wire marked "TACH IN/RPM MODULE" from the EZ-EFI harness into the tach output of the CD box. If you're running traditional OEM style ignition there's a FAST rpm module (shown here) that connects to the negative side of the coil and outputs a signal to the ECU.Note: HEI distributors (and possibly others) do have a terminal labeled "TACH." But, that's not a clean, processed tach signal like an aftermarket ignition box would supply. Instead, it's simply another terminal connected to the negative side of the coil. Do NOT connect that terminal directly to the "TACH IN/RPM MODULE" wire in the wiring harness. The ECU may be damaged. In a case like that, Option 2, using the RPM module, is required since what you are really doing is connecting to the negative side of a dwell-controlled coil. View Related Article
|
|