what is needed for the black bear tune?
It's really very easy. I'd visit blackbearperformance.com and that'll answer most questions.
A short summary is you can get your ride tuned one of two ways. One way is they organize a meet in your city or near by and you get an in person tune done by Justin. He basically rides around in your vehicle for a half hour with his laptop and dials in the tune for you based on what you want out of your vehicle. A second way is via mail where you buy a device, log how your vehicle performs during normal driving conditions, email those log files to him and he'll send you your tune files back that you log onto the vehicle. There are very detailed instructions on that website if you go with option #2.
You can get tuned to get better MPG or better performance or a combination of both. I've heard some people getting as good as 3 MPG better after their tune when they went that route. Either tune will make your SUV/truck drive and handle worlds better, though.