MicroSquirt.com read only forum (Jan.15,2018)

I would try using the VR input instead of the optoisolated input. Some ignitions don't supply enough current to trigger the optoisolator.

There's a good chance you can just tune around this - can you post a data log of what's happening, and a copy of your MSQ?

Can you post a copy of the tune file and a data log of what's going on? This will give everybody more information to use to get this figured out.

Can you post a data log of the problem you're having and a copy of your tune file? This will give everyone more to go on.

The B&G code covered on this forum has a maximum of two spark outputs.

The MS2/Extra code, which has a separate forum at MSExtra.com, would allow using three spark outputs to run the coils in pairs.

MS2 can driver the stepper IAC and its injector drivers have considerably higher current capacity, which is very useful with TBI injectors. I'd use an MS2 over a MicroSquirt for this application.

Please post a data log of what's going on and a copy of your tune file. This will shed more light on the subject.

Exactly how is your ignition wired up?

Do you have a factory wiring diagram for how this was configured?

Have you confirmed the RPM reading is above cranking RPM?