Well i went to the track with my truck to see what if any improvements Spartans tune made. Well i made a stock tune first pass, 16.96 @ 79, 2.33 60':sleeping: . Thats far from impressive. Well i loaded Spartans race tune and let her rip. I ran 14.24 @ 93 with a 1.88 60', 3 times in a row :lol:. Thats impressive to me, i'm all stock except for a K&N intake. I'm hoping with a full less restrictive exhaust i might get a 13 second pass out of her. Anybody knows what these trucks weigh? Its a 05 C.C., 4wd, swb.