I'm running e85 on an open loop tune. During idle and cruise, one thing I've noticed is that as soon as it gets hot outside and I've been driving for a while, like over an hour, and IAT's are 100+ at idle, the AFR leans out. I try to keep AFR between 1.00 and 1.05 lambda, and that will hold perfect until it starts to heat up, then it creeps up to 1.10, and sometimes higher.
I scan fuel pressure, and that does not change with the heat. MAF values and timing do not change either.
Is there some other table that is not visible in HPT that could change AFR based on IAT's or some other parameter? Any other things to check?
Hot scan and normal scan are attached. These scans were run on the same tune and same tank of gas, but the hot scan was after driving a long time and heated up, and the normal scan was from a cold start through normal operating temps.