The riginal EFI is fine if you don't want to go too wild in your mods but if forced induction is on the crads then programmable EFI is the way to go.
I know the japenese companies have every gadget under the sun to 'fool' your stock EFI into working but after you factor the costs into it the cheaper option is programmable.
I'm happy with my current setup of Fuel EFI and conventional elecronic ignition but if something can work better then I'll give it a go.
My plans are forced induction either by blower or turbo so either a remaped dizzy or programmable will be needed anyway.