Hei conversion troubleshooting

I'm about out of ideas except maybe try a few things

1...Post a photo? of the module mount, make sure it is flat, mounted and heat sinked

2...Just because the pickup polarity ran much better one way, does not mean you don't have rotor phasing problems, which I'd suspect

3....You should be able to disable the charging system by yanking off one field wire either at VR or alternator, and the car should run fine.

4....How long are the dist. pickup wires and are they twisted? Are the pickup wires run away from other high current or high voltage wiring, and cross at close to a 90 angle?

So far as a coil, I just used the stock Mopar coil on mine, ran fine.