Grams Performance is proud to offer the most innovative high - performance fuel injectors for today's performance vehicles. Premium materials, advanced manufacturing techniques, and stringent quality control procedures make Grams Performance the leader in high - performance fuel injectors. An engine's fuel injectors perform a vital role in the accurate metering and atomization of fuel. Grams Performance accomplishes this with its high - impedance fuel injectors that are modified for high - performance use. Each injector is individually balanced, flow tested, and dynamically matched for characterization within one percent of one another. To ensure leak - free operation and optimal performance, each injector is then pressure tested up to 220 psi. The results are unmatched cylinder - to - cylinder consistency, even at low pulse widths, as well as optimal idle quality, response, and performance. Grams Performance Fuel Injectors' ultra - fast and precise solenoids feature a linear response curve across a wide range of operating conditions and can accurately meter fuel even at the highest pressures and shortest pulse widths. Grams injector's superior ballpintle valves combined with Grams Performance's precision - modified nozzles allow for consistent performance up to 118 psi, making them suitable for a wide range of applications, yet without exhibiting any of the high - pressure problems often associated with other injectors. The optimized spray pattern also helps improve mixture preparation as well as atomization. Grams Performance injectors are cold - cut with diamond grinders in less than three seconds for high precision without 'pre - seating.' Abrasive cutting creates heat, which leads to poor spray patterns and the need for competitors to pre - seat their injectors to reduce distortion.