- - - - UPDATE #2 - - - - -
Okay, was finally able to get my GXP tuned and DoD disabled (a simple 'disable DoD' check box in the tuner software apparently!)....and it is SO much better - none of that stupid noise and engine bogging down - plus I'm hopeful this will reduce or eliminate my oil consumption issue.
While he was in there - he also changed some other settings - tightened up the shifts at wider throttle opening (much quicker shifts), more fuel at wide open throttle, timing changes, overdrive moved to 55mph, and several other small adjustments (fans cut in at lower temp etc). Well worth it and the car is much nicer to drive now. He is charging $250 but being a local guy, mine was a little less for cash and worth every penny!