Chi, not got a SS myself, but did once own a highly tuned CB900F, which had to go through a lot of ignition system mods to get it to rev out properly. First step was to go EV race tip plugs, then CirCycle coils and larger cored Silcon HT leads, each of these mods got me approximately 500rpm nearer to the redline. In the end I went to see Mistral engineering in Stoke Newington and purchased a new ignition Box off them, this cured the problem and was the same unit as developed for Howard Lees and the Bike Magazine Endurance racer. As Frank says maybe Dyna coils and Taylor leads are the first step along with good race type plugs. Rewiring the coil feeds looks like a sensible move. But I would have thought John Baines would be the first person to talk to about it all
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