I didn't read thru your whole efi thread, but how far can you modify an engine before the ecu needs to be recalibrated? Because right off the hop you'd need to recalibrate to get the ignition timing to suit your combo, even if the maf can cover fueling on a mild motor. I know from past experience that even 80's stock ecus are a nightmare in terms of their overcomplicated programming for fuel and spark. I've seen enough there to know a cheapie megasquirt is simple in comparisin.