Definitely, and we recommend that you do. The tune still works with tow/haul on or off but with tow/haul on you also have the transmission programming that downshifts for you when you brake, etc.
Definitely, and we recommend that you do. The tune still works with tow/haul on or off but with tow/haul on you also have the transmission programming that downshifts for you when you brake, etc.