Hey Guys, I did my first diesel tune on a 2016 Hilux 1GD engine and auto, when I did my power runs i cant get the Hilux to hold 4th gear, I turned traction control off, moved shifter into sports mode and selected 4th gear with a start speed of 65KPH on the dyno, after it reaches max revs in 4th gear it'll shift into 5th, how do i stop it from shifting into 5th? when I've already selected 4th gear?