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EA839 2.9 TFSI

Audi RS4

B9

The B9 Audi RS4 with the EA839 2.9-litre twin-turbo V6 TFSI. A seriously capable performance estate with strong factory output and significant headroom for tuning.

450 Stock BHP
560 Stage 1 BHP
900+ Stage 3 Ceiling
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Audi RS4 B9
Performance Stages

EA839 2.9 TFSI Tuning Stages

All power figures are average estimates based on typical results. Actual gains depend on vehicle condition, fuel quality and supporting modifications.

01

Stage 1

530-560 bhp

Software only. No hardware changes required. Custom ECU calibration on fully standard engine.

  • Custom map written in-house
  • No additional parts needed
  • Fully reversible
02

Stage 2

600-650 bhp

Calibrated for bolt-on modifications. Downpipe, intake and supporting hardware.

  • Requires supporting hardware
  • Mapped to your specific mods
  • Data-logged and validated
03

Stage 3

700-900+ bhp

Full custom calibration for serious builds. Hybrid turbos, uprated fuelling and bespoke mapping.

  • Hybrid or upgraded turbo
  • Uprated fuel system
  • Bespoke build calibration

Ready to Tune Your RS4?

Get in touch to discuss your build. Every map is written in-house and tailored to your car.

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