Problems converting to SD and Fast 92 with LS2 TB in my 97 C5

[wannaberacer]

Hey Guys,
I just changed my setup from last year by converting to an LS2 throttle body, Fast 92 and by removing the MAF altogether. Besides updating the VE tables, all I have done is change the ETC scaler to .320, failed my MAF reading at 0Hz and I've checked P101,P102 and P103 to "No Mil Light". So far, the car struggles to hold a constant idle and has an intermittent surge every once in a while. Also, I can't make full throttle pulls without the car going into limp mode (it will do high throttle runs, just not 100% WOT). Any help and advice would be GREATLY appreciated!

Engine Specs;
- LS6 383, 12.5 compression, 240/244 cam, ported Fast 92, ported LS2 TB (properly), CNC'ed 241 heads.

4-26 goes to limp mode.hplNew intake setup (4-26-2015) SD Tune3.hpt

[SultanHassanMasTuning]

car is grasping for timing, adjust your BRAF for starters