Sometimes too much of a good thing is not good. When it come to the fuel being pumped into your engine, this is very true. Too much fuel too fast robs you of power. Too little fuel pumped to the cylinders robs you of power and performance as well. The only way to be sure that your engine gets the precise amount of fuel it needs is with a B&M Fuel Pressure Regulator. It works to keep the fuel pressure at a constant 28 psi. This means that your engine puts the most power on the pavement when it gets the exact amount of fuel under any driving conditions. Your engine's needs are sent to the B&M Fuel Pressure Regulator and it is able to determine the pressure and adjusts it so that your engine can produce the most power possible. It does this through a valve it controls with its spring-loaded diaphragm. If too much pressure is detected in the fuel lines, the valve opens and enables excess fuel to return to the fuel tank. If you are lucky enough to drive Honda, Acura or Mitsubishi, then you need to install a B&M Fuel Pressure Regulator. You will be glad you did. You should get professional technical assistance when they buy dependable parts for their car or truck. Thus, we've established a twenty-four hour a day help call center to address your needs. Everyone hates paying for shipping, so we provide free shipping on every order at least $50. If you find a better price, call us - we always beat any advertised price for auto parts.