well, while I would not rule out a coil, just remember that any time you up the anty on the boost and fuel, your increasing the cylinder density and pressures. Sometimes its more than the ignition can handle and the spark cannot bridge the distance on the plug.

You will have to start gapping them tighter for high boost.

And I was only out for puttering today, wasn't trying to go full blast, just chillin and cruisin, especially with the weather and 40 million pounds of pea gravel...