moochy

. . . or the neutral lock... Does the impeller actually stop?

I have a 210 Challenger which introduced the iTC features. The neutral lock is just simply a result of changing from the mechanical throttle control from the 2011 to the electronic control with the iTC. In the 2011 model, you actually had two controls, one for throttle and one for "shifting" (fwd, neutral, rev). With iTC controls, there is only one control now that handles throttle and shifting. The lever locks in neutral position unlike the 2-lever setup. In any case, the impeller never stops.

How does the fuel consumption meter differ from the gas gauge?

My 210 has an analog fuel gauge as well as the fuel consumption meter. The fuel consumption meter will tell you the real-time fuel usage in GPH and as well as an overall average GPH.