My trans go shift kit which was made for the super duty trucks and not lightning specific will chirp 1-2 on any decent pavement except the drag strip with et streets with no other mods,problem is my swanson chip did just as good without the shift kit.Either one of these will make an L chirp 1-2 with no other mods.Net gain at the strip for the shift kit was 0. And this has to be hard on the transmission as mine shifts kind of hard with normal driving.