Nice vehicle. I want a 12 valve with NV4500 and no rust. Find me one.
If your torque plate is flat be easy on the pedal at low rpm / low boost, you don’t want to overfuel at low rpm, that plate is shaped to prevent that. Your egt is still too high, you should not exceed 1200. Your exhaust system was a step in the right direction. A larger turbine housing should be your next step to lower the egt.