the fp green was MADE to run at 18-23psi on pump… and LOVES racegas.
the ej20 motors will outrev the ej257 thus giving it a “happier” powerband as well… with a PROPER tune on 93pump i can see 335hp/325tq… on cam2/c16 400/400 easy. with a more useable powerband with the 5spd… assuming it doesnt strip the teeth off 3rd gear.