A carb can be very efficient, but, it takes work to stay on top of it and requires a very light foot. If he wants max FE while putting down the road at consistent speeds, a carb is fine. FI kicks it's butt because it can maintain perfect stoichiometry during WOT, whereas a carb goes too rich when you put your foot in it. Pretty much rules out P&Ging.
Wonder if it's possible to have a carb with an O2 sensor and variable jetting? I'm sure it's possible, actually. Just don't know if anyone has bothered doing it. I suppose a TBI setup makes way more sense.
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