just keep using the 4age ecu. can be tricked so it will run fine with boost. Most you would want to run everyday driving would be 7psi. could push to 10 for short periods but playing with a fire with the std ecu and tune with that sort of boost.
EVLGTZ
Ex 4AGTE AE101 Levin - 13.3@173km/hr
Ex BPT BFMR Familia - 13.8@168km/hr
Ex 4AGZE AE82 - 14.2@163km/hr
Current - 2000 Toyota Caldina GT, 2008 Ford Territory FPV