Reduce airflow restriction and increase horsepower in your heavy-duty truck. Airaid's MXP intakes are made for diesel Rams and Super Duty trucks, as well as the new Chevrolet/GMC Silverado/Sierra 6.6-liter Duramax. The one-piece roto-molded cold-air box houses a washable, reusable 1700-cfm filter with either a SynthaFlow composite or SynthaMax non-oiled filter. Airaid's dyno testing claims an increase of 19 horsepower and 34 pound-feet of torque. The MXP system comes with complete hardware and instructions, and installs in minutes. Pricing for the kit runs $420 with the SynthaFlow filter and $430 with the SynthaMax.