Most of you know what is is already
My take so far since getting it.

Updated to most recent.
Far more complex than other devices I've used with no instructions. Anyone that's never used a chip, programmer or tuner would be lost with all the pieces

Updating is a bit consuming. Not as simple/straightforward as others

Seems to be a nice unit
I can't say anything about performance gains etc.... Since I'm sitting waiting for tech help

Immediately after installing I got a DTC for an O2 sensor. Which I've never had before. Went back to the stock file as suggested. Reprogrammed again with a mild tune default settings
No DTC for approximately 3 seconds then it was on.
Reprogrammed a 3rd time with box tune. Same thing

I'm unable to go to stock since I was already deleted. In stock form it shows 2 DTC's.
Never had any prior

Programmed PO137 and can not clear

My truck is parked. While I need to be using it

If tech helps very soon and it's gone and I can use my truck. It may be ok. Otherwise I'm not very pleased with the purchase right now