Seemed to like being richer, 12.4 or so, but that could simply be because it was dumping as much fuel as possible trying to keep up. I was trying to make power/weight ratio on a points build NA8, can't really do that without injectors/FPR apparently, which cost points. Even at a leaner ratio the duty cycle is still going to be capped out by 6000rpm, might as well run 93 e10 and be at ~75% instead.