hi, i keen to share my idea for twin-sparking my bonneville by removing secondary air and threading the hole that is left to fit sparking-plug. Igniting any unburnt fuel is a good thing-think two stroke! Have spliced into existing HT lead with smaller wiring to create smaller secondary spark. result-more power, lower down torque and smoother delivery. Am thinking of using colder plug for secondary, but am pleased with reult so far so wll see.