1050cc Bosch Port Fuel Injectors for Audi RS3 TT RS 2.5 TFSI DAZA DNWA (Set of 5)
Upgraded MPI Fueling for High-Horsepower Audi Builds
These Bosch 1050cc high-impedance fuel injectors are designed for manifold port injection systems used on 2017+ Audi RS3 and TT RS 2.5 TFSI performance applications.
The upgraded injectors provide the additional fuel volume required for ethanol blends, high boost, upgraded turbochargers, and high-horsepower builds. They are intended to replace the MPI injectors in a compatible aftermarket fueling configuration while the factory direct-injection system remains in operation.
Why Upgrade the MPI Injectors?
As power and ethanol content increase, additional fuel delivery may be required. Upgraded MPI injectors can provide:
- Additional fuel capacity for higher horsepower targets
- Support for E85 and ethanol-blended fuels
- Improved fuel delivery under high boost
- Increased tuning flexibility
- Additional fueling capacity for upgraded turbocharger applications
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Performance Matched
Each injector is precision flow tested and matched to help provide balanced cylinder-to-cylinder fuel delivery. The 1050cc flow range provides substantial fueling capacity while supporting good idle and part-throttle operation when properly calibrated.
Features
- Approximately 1050cc/min flow rating
- High-impedance design
- Genuine Bosch EV14 injector technology
- Flow-matched set of five injectors
- Suitable for gasoline, E85, and ethanol blends
- Designed for compatible Audi 2.5 TFSI MPI fuel systems
- Suitable for street, track, and competition applications
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Common Applications
- 2017+ Audi RS3 2.5 TFSI
- Audi RS3 8V.2
- Audi RS3 8Y
- Audi TT RS 8S 2.5 TFSI
- DAZA-powered performance builds
- DNWA-powered performance builds, subject to tuning and hardware compatibility
What’s Included
- (5) Flow-matched 1050cc Bosch fuel injectors
- Individual injector flow-test results, if normally supplied with your matched sets
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Important Installation Information
Professional installation and compatible ECU calibration are required. Injector dimensions, electrical connectors, seals, fuel pressure, wiring, and tuning must be confirmed for the vehicle’s specific MPI hardware before installation. These are port fuel injectors and are not replacements for the factory direct injectors.

