So just an FYI, 15k on the tune and my DEF light came on, tank was full. The fix at the moment was flash it back to stage 2 with DPF (my first tune). Put ECU back in the car, turn the car on to accessory mode, wait 1 minute, then start the car. Turn it off and then turn it back on and light was gone. Flashed it back to Stage2 without DPF.
So yes this is just a work around at the moment, but it worked. I know when Malone gets back he will address this.
I am happy with the tune, being the second car in the US with this tune, I know there will be quirks, but I had a malone tuner install and that works in the shop that did all my exhaust work. Top quality!
The DEF injector needs to be installed in the exhaust and mine isn't clogged and doesn't have any issues.