a buddy at the track installed the 422 software in my GT 2.0. i had to write down the rest of the control settings(12-15) from SP.com because the original box only reads up to 9. i said what the hell it still isn't going to be faster than my tekin rs. i hooked it up to my old corally rdx and soldered a 2008 orion vortex 17.5 motor to it. as soon as i put the car down, the car went like a bat outta hell!!! i'm glad i didn't get rid of the GT2.0. now it's just as fast as the tekin rs. with the right gearing and programming it could be faster.