couple of things.... i had very similar problems, not saying you have the same fixes tho! heres what i have done and everything is fine! (for now......)
check gearbox oil, the auto box caused me a lot of stalling problems, just because the oil was low!
check you r tps voltage, set mine, then had to adjust the aac valve screw, and also the throttle cable screw.
check your coil packs, had horrible feeling in the car at about 4 grand, replaced all of mine three where cracked.(this could explain why your boost solenoid was disconnected, to stop the engine going into second stage boost and causing your engine to misfire under full boost)
re gap your Sparks to .8mm. or replace if they are fouled.
give all that a shot bud, i bought a 30 buck consult cable and plugged it in, it showed me tps voltage was wrong and that my 02 sensor was shagged.
silicone tape up your rocker cover breather connector (or replace) mine had split like a bitch and havent been able to find a replacement yet!
that should fill up your saturday!