ACCEL Performance fuel injectors provide precise control of fuel delivery and atomization for increased power, improved throttle response, and better fuel economy. ACCEL fuel injectors feature either a high or low-impedance design to function properly with your vehicle's ECU. Higher than stock flow rates may require reprogramming. These injectors also utilize a new low-mass disc design that ensures a spray pattern for ultra-fine atomization and improved burn efficiency. ACCEL fuel injectors come complete and ready for installation with precision-molded O-rings and fine-mesh fuel strainers.