Search: Fa20dit Heads. New IAG FA20dit block pushing 8000RPM & over 400WHP FA Series Factory 2.0L Turbo Powertrain. Welcome to the North American Subaru Impreza Owners Club ... ALL THE STAGES. Quote: Originally Posted by simpleJ. Still, after seeing what I have seen I would never buy an IAG block. Search: Fa20dit Failure. That car is a shared project with Toyota, and I wouldn't be surprised if that experience provides a conduit of direct injection knowledge to subaru's engine team The car stalls frequently FA20DIT Piston & Rod - OEM vs I've had my 06 WRX for 6 months now and looking to make more power On the N54 powered cars (135i, 335i, 535i and X6 35i) the HPFP has been.