That tricks the ECM in thinking the air temperature is cooler/denser than it really is and enriching the fuel ratio. Simple cheap resistor on the air temperature sensor. The other simple way would be to put a resistor on the oxygen sensor to trick the ECM to think the outgoing exhaust is too lean so the ECM adds more fuel to enrichen the air/fuel ratio.Originally Posted by Zteve
I added fuel injector cleaner to a tank of fuel and my stumble disappeared. Next fill up will be with ethanol free gas.
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