Run larger injectors turn boost up until AFR's are ok ???????????? PROFIT!
You're talking about tuning the 2.8 when you can get away with mechanical bolt ons and no tuning as the 2.8 will blow up before any ECU tuning is really even needed...What are you looking to change? Timing? Fuel? Both can be done with simple bolt on parts and possibly a 7th injector mod if needed.