[drewsgt500]

I have a cai and a sct tune. Thinking of adding 3:73 gears...do I need a new tune? Can i use the same tuner? Sorry new to forum.

 

[garagelogic]

You won't need a new tune, per se, but you will need to use your existing tuner to recalibrate for the new gears or your speedometer will be off.

 

[ingram4868]

You can download and print the SCT instruction manual from their website. Changing the gears or wheel/tire sizes is pretty easy.