Tuning a vehicle to optimize its performance is nothing new. This customized process is used to provide fuel efficiency and improve other driveability concerns. Tuning for torque is especially desirable by diesel owners.Those who are proficient at tuning know that the transmission will need serious upgrades to survive the increased force it will receive from the crank, through the converter and to its internal components. Those who are tuning amateurs blow out their transmissions by ignoring the physical path torque travels to get to the ground.