Yes, some Hondas used a Lean-Burn motor, and a wideband O2 sensor. More information can be found at www.diy-wb.com . Making the Megasquirt run 1-3 and 2-4 wouldn't really be a hack, either. Just a matter of rewiring the injectors, not that I have any experience with that. The MS doesn't give a shit what it is driving. It just sends out a pulsewidth, and whatever is connected to it will fire. I don't have a problem with the slight idle and emissions issues that may result from batch-firing in two banks. Beats the hell out of TBI, which is marginally better then a motor with a Carb. Hell, there are motors with carbs making TONS of power. If that can be accomplished with a carburator, imagine what can be done with a better system (dual bank multiport fuel injection).
-=B-=