I have the techni-cooler kit. That includes the intercooler, monster ram, boost tubes and parts, I tow a 15,000 lbs 5th wheel. I did not want crazy power. I have the 75hp Economind tuner and exhaust brake with the monster exhaust. This setup is at the limits of the stock trans. Ohio also has emission testing and the Banks parts are C.A.R.B. approved and don't change the factory programming. The truck tows the RV to my satisfaction on setting 4 (max is 6). As far as the air filter and box, I have an extra stock filter box I modified and an intake muffler replacement with the 4" factory filter. This setup is working well and I am very happy with the quality of the parts. The improvements in power are only seen when you install the a complete system. Tuners without air flow improvements burn up the motor. air flow improvements have a minor improvement in H.P.