OG 2010 Tundra Speed-O calibrator box?

Who can remember what we were all using to calibrate our speed-o after lift back in 2011?

I remember it being a separate box, but don’t recall the brand or where it was installed. I need to find it and remove it.

My truck has been at the dealership for weeks getting a new Toyota rebuilt transmission under warranty. They can’t successfully flash the ecm and have even tried a new ecm. They have gone through everything trying to figure out the issue. I just remembered the little speed-o calibration box, I wonder if that is the culprit?

 

Ok, I got lucky and found the old paperwork on the lift/wheels/tires, and it was on there. It was the Hypertech 730103, for anyone who might be interested in the future. Now the big question is, could this box cause problems with flashing the emc after a transmission replacement?