no.
there's a limit to how much power your sparkplug can discharge, so no matter if you pump 11ty billion amps down it using your overpriced splitfires or just pump the necessary amount using brand new factory ones, the sparkplug is gonna spark the same. Once you have a spark, you have combustion, which generates your power. Up until then your car generates 0 power. In fact it just consumes it.
Put it this way, if a terrorist was to blow himself up and had 1kg of TNT strapped to him, and had the option of a $2 switch and a $200 switch, both of which work properly, which switch do you think will give you the bigger explosion?
Half the time people start sporting boners for splitfires and rave on about how much extra power they're getting, it's because they've just replaced their factory ones that are about 10-15 years old with brand new ones.
you can wire up a cheap MSD transformer setup for about $200 that will give you the same spark as any splitfires, any day. fact. not quite as simple as unplug and plug, but it's possible.