C&L's 73mm and 76mm mass air meters allow you to upgrade your meter while retaining your factory air box or pre-existing cold air kit. With one of the 73mm units, you can expect 8 additional rear wheel horsepower. When installing the 76mm unit, expect up to 11 rear wheel horsepower. The 73mm unit has been used on vehicles that run low to mid-10's in the quarter mile and generate as much as 600 rear wheel horsepower on the dyno. The 76mm unit will support the airflow needs of a 9 second quarter mile vehicle and will supply air to engines generating up to nearly 800 horsepower. Uses your stock electronics.