Re: 12 Volt relay to feed the coils???
Higher voltage to the coils means a longer and hotter output from the secondary windings, better ignition of a somewhat not ideal mixture??? also less current on the existing wiring and switches.
I know my bike( 85 FJ1100, with a big bore 1250 kit, 11.5 comp, 150 hp rwhp) seems happier with the mod. But it is a pretty easy mod on the bike, not sure about the ZR-1, but the principals should be the same.
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