PMAS 80mm Mass Air Meters are a great way to improve over your stock mass air meter. The Pro M 80mm MAF reads 360 degrees of incoming air! This is the most widely used mass air meter made. The design of the meter achieves laminar (smooth) air flow using a patented, low restriction venturi, in conjunction with a patented tapered sample tube assure accurate air flow measurement. This optimal shape outflows more air than your stock meter, finding hidden horsepower within your vehicle's engine. The meter utilizes a low restriction of air flow, low back pressure, accurate air flow measurement; and a wide range of measurement accuracy. The meter achieves accurate air flow measurement by internal meter passages which average the air flow meter readings. Engines perform better if fuel is metered based upon the average engine air flow, not air flow engine pulsations. Get yours now during our limited time only sale and save literally HUNDREDS OF DOLLARS off retail price! NOTE: Installation will require the removal of your stock black airbox. This will not work if you run a Cold Air Induction Kit. NOTE: THIS METER IS A PRO M MASS AIR METER. IT WILL BE CALIBRATED AND SHIPPED BY PROFESSIONAL MASS AIR SYSTEMS WHICH IS A GROUP OF EX-PRO-M EMPLOYEES THAT HAS RE-OPEND PRO M UNDER A NEW NAME AND OWNERSHIP. THIS METER IS IDENTICAL TO THE PRO M 80MM METERS THAT WE WERE SELLING BEFORE PRO M WENT OUT OF BUSINESS. PLEASE ALLOW 7-10 DAYS FOR YOUR METER TO SHIP.