Originally Posted by
Chris@HPTuners
the early LS2 code has bug in it (yes GM has bugs too) that causes the MAF to bug out at 11,500 Hz. Log the MAF freq to see what i mean.
We have a patch for the code that can be accessed under the Operating System section. Set it to "Patched" and then do a Write Entire (you only need to do this once).
Also, be sure to disable P0108 as it will also set at part throttle on boost and you will lean out. The LS2 switches to the VE table if the MAP fails... go figure.
Chris...