Hello guys. I have a 96 12v with some mods. I just bought a 07 5.9 24 valve 4x4 auto with 67,858 miles on it thats basically stock except for a Banks cat back exhaust, cold air intake and a ATS Arc flow intake. I bought it from my buddy who bought it new. He gave me a new Smarty S-06 tuner that he never used. My question is what the best setting everyone is using. I was thinking of SW2 or SW3. Its my daily driver and tow with every now and then. Just looking for a little more power and mpg.