Looking for some idea's on getting the best bang for my buck on increasing the horsepower, torque, mileage, and overall driveability of my 06 silverado. It has the stock 5.3L with just a K^N filter and magnaflow exhaust. What is the best programmer out there for that truck? Also, i heard a mild cam swap with a cold air intake and a good tune could potentially put that truck in the 12's? Legit? Any feedback would be awesome! Thanks!