I will be using a small engine gas carb - ie, a mixer and throttle valve. This will be tied into the intake manifold (not sure about direct mount or a hose yet). I'll probably add a small separate air filter for the gas carb (vs tying into the existing one).
I think that the ECU thinking I'm going down a lot of hills is a good way to describe it.
The goal is a 50/50 mix of nat gas and gasoline at normal cruise.
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