While I cannot answer the question for Injected, I can tell you that typically the programmed tuners are mailed to the customer, who loads the tune on to his / her car.
Believe me, I am a person with limited skills, and even I could load the tune. I was surprised at how easy it is. You connect the tuner to the port in your car, start the car and follow the instructions on the tuner screen.
See the problem isn't that I don't know how to do it. I was passing by their store on my way to Orlando for work. I won't be at home for three months with no access to a pc that I can load programs on and will be living in a hotel room.
This would have been an easy route. However they were closed.