Grams Performance 79-92 Mazda RX7 / RX8 550cc Fuel Injectors (Set of 2)

This engine parts collection covers oil catch cans, thermostats, thermostat housings, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, supercharger pulleys, idler pulleys, tensioner pulleys, and engine bay dress-up parts for trucks, SUVs, muscle cars, boosted builds, high-horsepower street cars, and performance vehicles that need better reliability, cooling, airflow, oil control, and under-hood styling. The collection is particularly strong for Dodge Challenger, Charger, Durango, Jeep Grand Cherokee Trackhawk, and Ram TRX platforms running 6.2L Hellcat, 6.4L HEMI, and 5.7L HEMI engines, where oil catch can and cooling upgrades address known OEM weaknesses in the PCV and thermal management systems. Import performance platforms including GM LS-based builds, Chevrolet Camaro, and Corvette applications are also represented through Mishimoto, CSF, and ZPE GripTec product lines. Builders who invest in engine bay organization and reliab...

Fuel injector connectors are the electrical interface between the engine wiring harness and each individual fuel injector solenoid, carrying the precision pulse-width-modulated signal from the ECU that controls injection timing and duration. Connector failure, corrosion, or poor terminal contact causes intermittent misfires, rough idle, and lean conditions that are frustratingly difficult to diagnose without testing each injector circuit individually. Replacing damaged or corroded injector connectors with new pigtail harnesses using factory-grade terminals restores clean electrical contact and eliminates ghost faults that confound standard scan tool diagnostics. Builders doing engine swaps or injector upgrades also rely on connector pigtails to adapt factory harnesses to new injector styles without permanently altering the original wiring. Popular Upgrades Top-selling injector connectors include Delphi and Bosch OEM-spec EV6 connector pigtails for late-model GM, Ford, and Chrysler E...

A matched set of fuel injectors ensures balanced fuel delivery across every port in rotary Wankel engine applications, preventing the port-to-port variation that causes uneven combustion, rich or lean conditions, and apex seal issues that accelerate with improper fueling. Rotary engines have unique fueling requirements compared to piston engines, with each rotor face acting as its own combustion chamber requiring precise sequential injection across multiple ports simultaneously. Factory injectors lose flow capacity and spray pattern quality over time due to deposits, coking, and solenoid wear, making a complete set replacement more reliable than swapping a single injector after a misfire or rough running diagnosis. Rotary EFI builds benefit especially from matched sets since the Wankel's sensitivity to mixture distribution makes balanced fuel delivery more critical than in conventional piston engines. Popular Upgrades Top-selling rotary injector sets include Bosch EV14 matched sets ...

Fuel injectors are the precision metering devices at the heart of every modern electronic fuel injection system, responsible for atomizing fuel into a fine mist at exactly the right moment, duration, and spray angle for complete combustion. As injectors age, internal deposits and solenoid wear cause flow rate deviation, tip coking, and spray pattern degradation that result in rich or lean cylinder conditions, rough idle, elevated emissions, and reduced fuel economy. Selecting the correct replacement or performance injector requires matching the flow rate, impedance, connector type, and spray angle to your specific engine and fuel system configuration. From factory-replacement units restoring a daily driver to high-impedance Injector Dynamics sets supporting four-figure horsepower builds, this collection covers the full range of fuel injector needs. Popular Upgrades Top-selling fuel injectors include Bosch OEM-replacement and remanufactured injectors for high-volume domestic and impo...

Grams Performance is a manufacturer of precision high-flow fuel injectors, fuel rails, and fuel system components designed for the serious performance and motorsport market where accurate, consistent fuel delivery at elevated flow rates is required for reliable high-power operation. The brand's injectors are manufactured to tighter flow matching tolerances than many competitors, with matched sets calibrated within 1 to 2 percent of each other to ensure cylinder-to-cylinder fuel distribution consistency that is critical for producing a smooth, drivable tune on modified engines. Grams covers popular import and domestic performance platforms including the Honda K-series and B-series, Subaru EJ, Mitsubishi 4B11T, Nissan RB and SR, and Toyota 2JZ, as well as GM LS and LT applications where high-flow injectors are needed to support supercharged and turbocharged power levels. The complete Grams fuel system catalog includes high-flow rails, fuel pressure regulators, and fittings to build a ...