Hi, I'm planning on getting a new cam for my 2001 v6 auto this summer, but have a couple questions. First off how much will it affect my gas milage and will my car still pass emissions. Secondly I heard that it would run better if i got a chip as well. If this is true i may get new gears and t-lock at the same time, but i'm not sure i want to spend that much money. But if it needs the chip i would rather get gears before the chip. I also was planning on putting in pullies and a trans-cooler when i put in the cam. I already have duals and a cai. I appriciate any help, thanks.