It’s in the mid 14’s bud, pretty close to ideal, considering that the car has no ‘closed loop’ mode. Ethanol ‘likes’ to knock when rich, but as long as your at the AF you were at down there or very close, I’m sure you’re fine as he def know’s what he’s talking about. I’ve got a new, easy way to compensate for minor A/F changes…PM me if you want as I don’t want to clog this thread.