Grams Performance 550cc Fuel Injectors 02-14 Subaru WRX / 07-16 STI / 07-11 Legacy GT / 04-13 Forester XT


Grams Performance 02-11 Subaru WRX / 07+ STI / 07-11 Legacy 550cc Fuel Injectors (Set of 4)


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 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. Each injector is also fitted with high-quality Viton O-rings that are resistant to extreme temperatures and harmful oils found in some fuels.

Each injector set includes dead time compensation values to help ensure consistent air/fuel ratios and optimal performance when tuning. Grams Performance Fuel Injectors are carefully tested and matched in controlled laboratory environments using state-of-the-art equipment and are subjected to rigorous dyno, street, and race track testing to ensure proper performance in the most extreme conditions.

– High-impedance design with no resistor box required
– Cold-machined tips for high-precision operation
– Ultra-fast solenoids for precise fuel metering
– Linear response across a wide range of operating conditions
– All injectors balanced, blueprinted, and matched within one percent
– Compatible with all known fuels including gasoline, methanol, and ethanol
– Unmatched cylinder-to-cylinder consistency and optimal idle quality

SKU: G2-0550-1200

Vendor: Grams Performance

Additional information

SKU G2-0550-1200
Carb Compliance Yes
Prop 65 Unknown
EPA Approved N/A
Weight 3 lbs
Dimensions 6.75 × 5.5 × 3.25 in