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Browse & shop Performance Fuel Injectors for your car or truck.
Fuel injectors are responsible for delivering precise amounts of fuel into the engine to support proper combustion, power delivery, and drivability. Upgraded fuel injectors are commonly used in Subaru WRX and STI builds to support increased airflow, ethanol blends, and performance tuning.
Compared to factory injectors, performance fuel injectors provide higher flow capacity and improved fueling control under load. This allows the engine to safely support additional power while maintaining consistent air-fuel ratios across a wide range of operating conditions.
Choosing the Right Fuel Injectors
Street-focused fuel injector upgrades are typically selected to support moderate power increases while retaining smooth idle quality and predictable drivability. These setups are well suited for daily-driven vehicles running bolt-on modifications or mild ethanol blends.
Higher-flow fuel injectors are commonly used in performance-oriented builds where power goals exceed the limits of factory fueling components. These injectors are often paired with upgraded fuel pumps and proper fuel pressure regulation to ensure stable and reliable fueling at higher horsepower levels.
Selecting the correct fuel injector size depends on engine platform, power goals, fuel type, and tuning strategy. Proper injector sizing and supporting components help maintain consistent fueling and long-term engine reliability.
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