[deadeye1287]

Hello, hoping someone can let me know a definitive answer on this as there seem to be a couple conflicting reports on if this is normal on some other sites. Just installed my chip in my 02 F250. Currently running firmware 2.85.0.10 with all TNAA4S2 calibrations for my VDH4 PCM. If I start the truck up on the bypass setting, when I switch to my tunes, sometimes the truck will stall and die, sometimes just stall, and sometimes it will switch to the tunes fine. If I start up on any of my tunes, it switches between tunes without missing a beat, goes to bypass fine and goes back to any tunes from bypass fine. I also noticed if I put the truck in the high idle tune or whisper mode tune, then go directly to bypass, it stays in high idle or whisper mode accordingly. I'm assuming the latter is normal, but it seems odd that I sometimes stall when switching from bypass? I've noticed it seems to die more often if I switch immediately after the truck starts and the dash lights go out. Thanks!