In running around 70% Methanol and with my KB Boost-A-Pump with Torrie's modded tunes and 93 E-10, I saw FRP drop as low as 850. We backed off some and attempted to keep FRP above 1,200 psi and Lambda no higher than .82 on both banks. I'm sure that if I had been running 100% methanol that I would have been able to get more out of my Flex with the same goals above, but at 70%, we had maxed the fuel capabilities of my system in Torrie's opinion. Generally, it appears to me that a Flex is about .5 seconds slower than a SHO with the same mods.