George, I like following your posts. This is the kind of stuff I like tinkering with... when I understand it. You are tricking it to run leaner at idle, as others have stated. If you knew what resistance was across the temperature range you could bias the resistance accordingly. Do you have an O2 sensor to monitor?
Thats the 617cc engine you and I discussed a while ago. From all the forums I poke around on that engine is known to run rich at idle. I have seen guys complaining about it in Mules, Gators and zero turns. More than one complaint of the crankcase being full of fuel at 8 hours. (first oil change interval) Finally for 2015, they supposedly have a new fuel mapping for it to correct the rich idle. But I couldnt get true confirmation on that, so I ordered the bigger engine.
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