My friend has and 05 mustang gt and he is going to be getting gears put in and a short throw shifter. He is being told he needs to purchase a tuner as well. Is this just for the speedo to be corrected or is there another reason he needs one?
My friend has and 05 mustang gt and he is going to be getting gears put in and a short throw shifter. He is being told he needs to purchase a tuner as well. Is this just for the speedo to be corrected or is there another reason he needs one?