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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

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Price: €381.43
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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