Grams Performance 550cc Injectors
FEATURES:
- High-impedance design (no resistor box required)
- Cold-machined tips for high-precision operation
- Ultra-fast solenoids for precise fuel metering
- Linear response across 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
- Code: G20-05-5710
- Manufacturer: Grams Performance
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 Bosch Motorsports EV14 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.
The EV14 injector’s superior ball/pintle 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. 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.
550 cc/min. Flow Rate and Dead Time
Fuel Pressure | Flow Rate | |||||
PSID | 8 Volts | 10 Volts | 12 Volts | 14 Volts | 16 Volts | cc/min. |
43.5 | 2.700 | 1.540 | 1.120 | 0.730 | 0.523 | 550cc |
45 | 2.850 | 1.560 | 1.130 | 0.740 | 0.529 | 559cc |
50 | 2.970 | 1.580 | 1.144 | 0.745 | 0.534 | 589cc |
55 | 3.120 | 1.600 | 1.151 | 0.749 | 0.538 | 618cc |
60 | 3.300 | 1.620 | 1.158 | 0.751 | 0.541 | 645cc |
65 | 3.600 | 1.640 | 1.164 | 0.753 | 0.543 | 672cc |
70 | 3.840 | 1.660 | 1.171 | 0.756 | 0.545 | 697cc |
75 | 4.090 | 1.680 | 1.179 | 0.760 | 0.547 | 722cc |
80 | 4.330 | 1.700 | 1.188 | 0.765 | 0.549 | 745cc |
85 | 4.580 | 1.723 | 1.196 | 0.770 | 0.552 | 768cc |
90 | 4.820 | 1.740 | 1.203 | 0.775 | 0.557 | 791cc |
95 | 5.060 | 1.756 | 1.211 | 0.777 | 0.562 | 812cc |
100 | 5.310 | 1.770 | 1.218 | 0.780 | 0.567 | 833cc |