Originally Posted by Longwong
I wouldn't do it with a supercharger as the fuel pump would really stress.
I think it's going to be close to maxing it out on a 625 kit, but without logging, it's just guessing. 650 kit pretty much maxes out the stock fuel pump as we've seen logs of FP dropping/AFR running lean after 7K on these kits.
Again, it's a 15% increase in ethanol concentration we're talking here; it's not a massive change that'll command a massive increase in duty cycle.