Audi RS6 4.2 V8 Turbo 2003 Turbo-Benzin 331KW Bosch 0261208728 4D1907558F 370934 Stage3

Audi RS6 4.2 V8 Turbo 2003 Turbo-Benzin 331KW Bosch 0261208728 4D1907558F 370934 Stage3
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ECU file for Audi RS6 4.2 V8 Turbo 2003 Turbo-Benzin 331KW – Stage3 performance tuning file. ECU: Bosch 0261208728 – SW: 4D1907558F / 370934 ( 1037370934 ) – for vehicles with factory output around 331 kW (~450 HP).

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Technical Specifications
ManufacturerAudi
ECU SystemBOSCH
CalibrationStage 3
ECU HW / SW number0261208728 | 4D1907558F | 370934
CHECKSUMS CORRECTED / READY TO FLASH
COMPATIBLE WITH: KESS V2/V3, MPPS, FOXFLASH, AUTOTUNER, FLEX, CMD, NEW GENIUS & OTHER PROFESSIONAL INTERFACES
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Instant Download

Your tuning file is available immediately after purchase — no waiting.

Checksum Safe

Every file is verified and checksum-corrected for safe, reliable flashing.

Tool Compatible

Works with KESS, KTAG, AutoTuner, CMD, PCMFlash, and all major interfaces.

Engineer Support

Our tuning engineers are available via WhatsApp for any technical questions.

Vehicle Audi RS6 4.2 V8 Turbo 2003 Turbo-Benzin 331KW
Engine power 331 kW (~450 HP)
Fuel type Turbo-petrol
ECU brand Bosch
ECU hardware 0261208728
ECU software ID 4D1907558F
Bosch software number 370934 ( 1037370934 )
Tuning type Stage3
Read method / notes 4D1907558F 370934

This product contains a calibrated Stage3 tuning file for Audi RS6 4.2 V8 Turbo 2003 Turbo-Benzin 331KW with Bosch 0261208728 and software ID 4D1907558F (Bosch software number 370934 ( 1037370934 )). The base stock vehicle for this calibration has a factory output of around 331 kW (~450 HP). This high-stage file targets heavily modified setups (bigger turbo, injectors etc.) and should be used by experienced tuners only.

All ECU tuning files from TUNING-DATABASE are prepared for professional use. They are useful whenever you search by ECU ID, hardware or software number such as 0261208728, 4D1907558F, 370934 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.

hash: 38C88B19D31932085A1A483EF3D653DD3AD0543D69E20A4BDFA59232617F731B

Frequently Asked Questions

Use your preferred tuning tool (KESS, KTAG, AutoTuner, CMD, etc.) to write the file to the ECU via OBD, bench, or boot mode.

Yes. Every file we sell has verified checksums — ready to flash without additional correction tools.

Contact us via WhatsApp or the support dashboard. Revisions for the same stage are free.

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