RSX Fuel Injectors 2.5TFSI (EA855) Audi RS3 8P (+600hp)

Bar-Tek RSX injector kit for 2.5 TFSI engines, fueling upgrade for high power builds

The Bar-Tek RSX Injector Kit is a high-flow injector package designed for EA855 2.5 TFSI engines when targeting power levels well beyond stock. This kit is intended for tuned and built engines where fueling capacity becomes a key factor for reliable high output performance.

• High-flow RSX injectors for 2.5 TFSI EA855 engines
• Significantly increased fuel delivery compared to stock injectors
• Suitable for street and motorsport builds
• Great choice for 600 hp class builds
• Ready for installation and calibration

What does it do

When upgrading the 2.5 TFSI engine with a larger turbo and higher power goals, the factory injectors quickly become a limitation. RSX injectors provide increased fueling capacity, helping maintain safe AFR under high load and enabling higher power targets with better reliability.

Important note

ECU calibration is required. Professional installation and tuning are strongly recommended to ensure proper injector scaling and correct fuel maps for your setup.

What’s included

• RSX injector kit for 2.5 TFSI 5-cylinder engines

Compatible engines

• EA855 2.5 TFSI CEPA
• EA855 2.5 TFSI CZGB

Example compatible models

• Audi RS3 8P CEPA
• Audi RS3 8V pre-facelift CZGB