he's already got a trans so thats not an issue...add lots of pulse width, and adjust the TBIQ table to command more fuel at lower rpms (low boost areas) that will get you started you can tweak from there. Make sure you adjust timing also otherwise your EGTs will be through the roof.
I recommend EFILive, theres pretty much nothing that compares to it in tuning abilities. Its a little overwhelming when you first get into it, but most vendors will hook you up with a tune to get you started when you purchase. Plus theres some good guys around here that can help you out. You...