Other benefits to your engine are that it keeps the engine oil cleaner longer because of the lack of deposits. It keeps carbon from building up in the combustion chamber and around the valves. Just as cancer is to the human body so is carbon to an engine. It eats away at the metals. This system also keeps engine temperatures down by about 20 degrees Fahrenheit; keeps the O2 sensor clean; keeps the injector stems clean; and, drastically reduces emissions and excessive burning of oil. Fuel efficiency is greatly increased. Drastically reduces unburned fuels and harmful deposits, therefore extending engine life. In fact, the emissions are reduced to the point that the exhaust smells like the by-product of an ozone machine. Both the EGR valve and the catalytic converter are kept clean. Also extends the life of the spark plugs. It stops engine pinging, also known as predetonation.