On this set up the customer brought in rc 1600cc low imp. injectors.. They Suck! No fuel control at low pw.. So we had to get a injector driver modual as the injectors and coils effect each other on this platform and caused the problems you had happen. The driver modual keeps the spark problem to a minimum but still no low pw control. I tried talking him into some 2000cc Injector Dynamic injectors but he barked at the price! Oh well.. The car was built by one shop the engine by another shop and was told by two more they could not tune it.. He brought it to us and we found a few problems and correct a few things and now she screams.
I like the trick ignition setup you did!
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