Tune
I agree, you can wright about any table values you need and the ECU will handle most anything, but for a TT setup you better have a very competent tunner!!
Whats your boost per turbo, waste gate, and BOV, injector size fuel pressure static and constant? 1 MAS or 2 in series, did you compensate for the MAP, Is it intercooled? how about engine mods to handle it, a stock 4.6L DOHC Mark VIII's internals will hold about 450 crank horse power.
I just want to save you allot of grief if you bought one of those cheep TT setups on E Bay for $339.
Setting up TT's on a Mark is very possible, complicated and expensive..........