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View Full Version : Anyone using Holley HP EFI with Coil near plug?



TBull
04-08-2020, 02:19 PM
I'm in the process of wiring my new build with the Holley HP EFI system and was just wondering if anyone else out there has used this system? I'm using a dual sync converted to a cam/crank position sensor in tandem with a coil near plug, so each plug will have it's own coil. I'm also using the Ron Francis harness for the rest of the system. The Holley ECU draws it's fused power directly from the battery and the coil I believe will get their power from the RF Coil/EFI wire so that it gets its power during both start and run. It's this combo that is a challenge and so I was trying to learn from someone that has already paved the way, if they exist. :) Thanks in advance for the help.

bobl
04-08-2020, 08:13 PM
I have not done the individual coil setup, but plenty of the Holley HP systems. What main harness are you running? Holley wasted spark uses direct battery power for the coil +12v but the LS configuration gets +12v from the fuel pump relay. The harness is going to dictate how you connect it. If you need a constant 12v like the DIS system shows, it needs to be fused and run directly to battery from what I can tell in the drawing. Post some details about your setup.

Bob