I want to look at ways of improving spark voltage so that I can open up the gap on my plugs to .055. The cars soot out the exhaust at all times. Under hard acceleration, they sometimes look like diesels. As the duty cycle is far different than most, I am always above 4,000 rpm and mostly between 6,000 and 8,000 rpm I want to improve things up there. I am presently using a stock setup of isolated coil and 6 wires. My SDS Setup has 3 2 terminal coils and I assume that would be better, but I really don't want to change over the ECU to an unknown setup and go through all the tuning again.