I posted about these P0011/P0021 in another thread in FEB2012. In time, the codes went away on their own. This time they appeared along with SES after hitting the throttle hard in the mountains. 119,150 miles; It was time for some work anyway. I changed the spark plugs to NGK Iridium IX and changed oil with Royal Purple 10W-30. I added NWP Phenolic Spacer 5 Piece Kit and NWP VIAS Delete Plate while I had everything apart. Deleted the codes with Accutron and they came back within 100 miles. I added SeaFoam to crankcase. Cleaned the IVT Control Solenoids and ports with break cleaner but they seamed pretty clean and working well. Cleared Codes, P0011/P0021/SES came back within 100 miles. Everything seems to be fine, but the codes are pending and SES is lit up. Any suggestions?