car starts up fine and idles fine but when you take it for a drive put it in park or neutral and it shuts off and will not start back up again if I reflash the computer (even with the same tune that's in the car) it starts up just fine but will still have the issue if you go from drive to park any ideas?

its a 2009 2.2 auto cobalt with 60# injectors and a bnr 2871r turbo

cobalt turbo mod.hpt