What modifications require custom programming?
Modifications that benefit from custom programming include, Headers, An H or X pipe, high performance cam, larger mass air flow meter, larger flow fuel injectors, etc. Modifications not requiring custom programming but will improve your vehicles performance including a K&N, AFE, Airaid, or DJ Motorsports air filter and air intake system, a reduced backpressure exhaust system or muffler, a new style of spark plugs, hotter thermostat, etc.