- B5 S4 Engine
- B5 S4 Fueling
- CHIP TUNING, STAGE 3- 2.7T, K04
CHIP TUNING, STAGE 3- 2.7T, K04
This tune is perfect for thsoe who have upgraded to RS4 K04 Turbochargers, but are not yet ready to upgrade to a complete Stage 3 Chip Tuning Package.
The 034EFI 2.7T Stage 3- ECU Upgrade is capable of over 320WHP on 91 octane with proper supporting modifications, and retains electronic boost control via the factory N75 valve.
- 5.0 BAR Fuel Pressure Regulator
- Stock MAF Housing
- RS4 K04 Turbochargers
Upgraded fuel pump is strongly recommended. Hitachi MAF sensor upgrade is required for early B5 S4 models equipped with Bosch MAF sensor.