Originally Posted by 69subaru360
You'll max out the MAF.
The rods, specifically the rod bolts, are not going to like that kind of power even if you keep it knock free and don't break a piston. I don't push stock subaru engines that I care about past 300 anymore, I've learned my lesson.
VE is only slightly changed by corn. The great thing is increased exhaust volume that counteracts the wastegate's affects on VE, and will also theoretically reduce the maf voltage's importance as the pressure goes up. That is the beauty of corn.
Worst case scenario? I sacrifice some peak power and richen the last referenced cells. 2 psi difference is only a handful of cfm on this turbo, and that is not going to be an issue.
Uk guys regularly put over 350 to the dyno rollers with PFCs on pump gas.