94 Octane with Ethanol, tank was running a bit low, not sure if that was a factor. Just switched from a well performing (I think) Cobb OTS 91 octane tune to the 93 octane Cobb OTS tune, I noticed it doesn't seem to allow as high boost pressure, timing isn't as advanced either, and seems to have higher AFR #s when on the throttle. Could be due to temperature / air differences or the fact that the Accessport was still learning to trust the Octane when re-loaded the new tune. So further experimenting is probably needed. When I first loaded the tune Octane Learn was at -0.75 (ideal is -1) as I drove it slowly fell to negative -.80, -.85 etc until it hit -1 . This log was likely done at -1 or very close to it.