14. As our Bronco's torque converter was being created, the vehicle's transmission was being rebuilt down the street at Performance Transmission. We made two important upgrades as the transmission was rebuilt: we utilized stronger planetary gears, and we got our hands on a TransGo reprogramming kit (otherwise known as a shift kit). The kit will cause the transmission to shift more quickly and firmly, with less slippage within the transmission being the result. This should help to slow wear in the transmission and extend its life.