I am not using spark control for mine, although that is possible (and preferred) for the system to do that. I am using a 123Ignition distributor, which is fully programmable via Bluetooth app to control my advance curve throughout the RPM range. I sent a distributor over to the Netherlands and had it retrofitted with the 123 Ignition system, so it looks totally stock, since it’s an Opel distributor.Eric, thanks a bunch for more information on using the Holley Sniper EFI. Does yours also control spark? I didn't see any MSD dizzy for the Sniper EFI that was for a 4 cylinder.
Gordon definitely likes his cars unique. I can see how creating a unique EFI system will also create a lot of headaches though, so sometimes it's best to go with solutions that eliminate a lot of potential problems.