To be honest, I think where I'd see the most gains from the multiple spark with my set up is at lower rpms during cold starts. While my car has decent street manners with 10:1 compression and a fairly mild roller camshaft (241 deg Intake / 246 deg Exhaust duration @ .050” and .558" Intake / .566 Exhaust lift with a 110 degree lobe separation), it's old school with a 750 Holley, no choke, aluminum heads and a 160 thermostat, it can be a bear during initial starts in cold weather.