I tried the % engine load and at idle it shows about 30%.
The manifold pressure gauge read 3.7-4 at idle
GPH reads .27 at idle with no electrics on, .37 - .4 with lights, radio and heater blowing.
Seems to work real well. I like the "smart" setting for fuel level.
Thought about setting an alarm for a gph reading of 2.0 or higher.
On cruise at 55mph it takes a steep hill for it to see 2.0 gph
At 60 mph, it see's 2.0+ quite a bit.
I can see how one of these will show you how to be more efficient.
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