I was wanting to start this thread to get input from those of you out there with knowledge on engine management upgrades for the 1fz-fe, especially the obd11 systems. It seems like boost can be obtained easily enough, but the fuel and ecm/ecu upgrade seems like a bit of trial and error. Perhaps the solutions could be shared as well as where to get them. Maybe I just haven't searched deep enough but so far it still seems confusing. Thanks in advance for all contributions from those who have worked these problems out.