Flem

I went out to start my burb today (its been sitting for 2 1/2 weeks) and it won't idle at all. I had this problem when I first did my mods but since having it tuned it hasn't been a problem. I had to get to work so I didn't mess with it thi9s morning but I'm going to re-read the PCM and autotap it this afternoon and see if any of my settings have migrated. but any thoughts would be appresiated.
here's the mods list: 02' 5.3L 4wd suburban
02'ls-6 cylinder heads
02'ls-6 camshaft
Magnuson Radix supercharger
3.25" pulley
Corsa cat back exhaust
other:
Baer Eradispeed 14" rotors
Champion Motorsport 22" wheels
305/40/22 Pirelli Scorpions