I finally installed mine last Sunday, definitely a nice bump in power. I actually appreciate the throttle sensitivity adjustability more than I thought I would.
Had a CEL at first startup, I forget what it was, but was power related, cleared it and never came back. It was 100% related to disconnecting the battery.
I haven't had a single issue since install, and am very happy with it.
Have not brought it in for service. personally, I think you'll be ok bringing in the truck with the truck put back to stock, although I cannot guarantee that.
Only things I wish this offered is data logging and the gauges.
@RamFan since you were invited to test, do you have any idea if this is something they'll offer?