Josh, something seems amiss with your LTFT's. In some places adding +23% to your MAF did nothing..
Well try the following:
1. Make B0120 400 RPM instead of 4000.
2. Drop SAE.SPARKADV Pid.
3. Drop SAE.VSS Pid
3. Add GM.HO2S11 and GM.HOS21 Pids
4. Add GM.IBPW1 Pids.
You should still be at 24 channels or less.
Whenever you are adding that much Airflow to the MAF, normally you see a 1:1 increase in Trim change. +23% = a 23% drop in LTFT's. So, if you do not see that you always worry about 4 things.
1. NB O2 sensors are not switching properly.
2. You're injector flow is not supporting your Mods.
3. Big-time exhaust leak..usually this is the culprit.
4. MAF needs cleaning (are you de-screened..is this a stock MAF?)
Re-set your Trims again..if you really had done this you should have started out at (0) on your Trims. Looks like you were still at +25% when your log started...
Sorry for the hassle, but these changes are necessary..