AFR correction changes with Ethanol %

mtocrs1

Member
Hello,
I had my SD2 setup on gas pretty good for idle and light boost. Decided to make the switch to E85 before wide open blasts. I ran the tank almost dry, turned on E85 in SD2 and put in 5 gallons of E85. The sensor went from 8% to 48% ethanol content shown in the powerlogger software. The car stumbled a bit on start up and then cleared up. It runs fine but my AFR correction is now around 20%. Adjusting the ETH-C table doesn’t make a difference. I expected the AFR correction to remain roughly the same. I can adjust idle fuel to compensate but that defeats the purpose of the sensor. What am I missing?
 
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