Original file
Original / Factory · Petrol · 4.2 V8 Quattro Tiptronic 300hp
Audi A6 4.2 L original file Bosch HW 0261206204 · 4D0907558S · SW 352486
Audi A6 4.2 L Petrol 219.9 kW (299 HP) OriginalPetrol, 219.9 kW (299 hp)
300 HP Factory calibration Stock backup file, 440 Nm, Petrol
Calibrated ECU file for 0261206204 (SW 352486). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 4.2 V8 Quattro Tiptronic 300hp, ARS, 4.2L, Petrol. Engine #10714 in our gains database.
- Power
- 300 HPfactory calibration
- Torque
- 440 Nmfactory calibration
Real data from Gains API. Dyno curve = typical ECU-family projection. Final gains depend on fuel, altitude, wear.
How it works
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Read your ECU
With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.
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Match the numbers
Your read must show hardware 0261206204 and software 352486.
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Pay and download
Card, Apple Pay or Google Pay. The file is in your account straight away.
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Write it and drive
Write it back the way you read it. Not right for your car? We correct it free.
What the car needs
Required modifications: Factory, Petrol.
Hardware
- Factory hardware: no modifications required
Software / calibration
- OEM calibration restored (recovery / immobiliser / coding work)
Original files are used to revert to factory state, repair after a faulty tune, or recover an ECU before service work.
Vehicle & ECU specifications
Exact vehicle, engine and ECU identifiers this calibration file is written for. Cross-check against your ECU before flashing.
| Vehicle make | Audi |
|---|---|
| Vehicle model | A6 |
| Displacement | 4.2 L |
| Fuel / Induction | Petrol |
| Factory power | 219.9 kW (299 HP) |
| ECU manufacturer | Bosch |
| ECU ID | 4D0907558S |
| ECU hardware | 0261206204 |
| ECU software | 352486 |
| Calibration stage | Original (Factory) |
| OEM engine code | ARS |
| File format | BIN / ORI |
| Checksum | Pre-corrected (ready to flash) |
| Delivery | Instant download after payment |
Engine performance matrix
Power, torque and fuel-economy figures for every tuning stage on this engine, sourced from the tuning-database Gains API. Values are healthy-engine crank numbers; real on-road gains vary with fuel, altitude and mechanical condition.
| Stage | Power | Torque | Δ HP | Δ Nm |
|---|---|---|---|---|
| Original / Factory | 300 HP | 440 Nm | — | — |
| Stage 1 | 400 HP | 520 Nm | +100 (33.3%) | +80 |
| Stage 2 | 424 HP | 546 Nm | +124 (41.3%) | +106 |
| Stage 3 | 495 HP | 682 Nm | +195 (65%) | +242 |
| Stage 4 | 585 HP | 814 Nm | +285 (95%) | +374 |
About this calibration file
This is the factory (original) ECU calibration for the Audi A6 4.2L Petrol, extracted from a genuine stock control unit. Use it as a verified backup before flashing any performance tune, or as a reference when recovering an ECU from a failed write.
This file matches a Bosch ECU with hardware number 0261206204 and software version 352486. Verify both identifiers in your flashing tool before writing — an ID mismatch is the most common cause of a bricked ECU. If you are unsure, upload a read of your original file via the file-request wizard and our engineers will confirm compatibility before you flash.
The file is delivered as a ready-to-flash BIN (and ORI backup where applicable) compatible with all major tools — KESS V2/V3, KTAG, AutoTuner, CMDFlash, Dimsport New Genius, MPPS, Flex, BFlash, PCMFlash, MMFlash — via OBD, bench or boot-mode as supported by your ECU family. Checksums are pre-computed and verified; no additional checksum tool is required. All files include a free revision if post-flash logs reveal a fuelling, boost or EGT issue.
Frequently asked questions
0261206204 (Bosch) listed in the specifications. Read your ECU with any supported tool (KESS, KTAG, AutoTuner, CMD, etc.) and compare the hardware + software numbers against the ones on this page. If they match exactly, the file is a direct fit. If you're not 100% sure, upload your original read via the file-request wizard and our engineers will confirm within minutes — no cost, no obligation.Product details
This product contains a complete original ECU backup (stock file) for Audi A6 4.2 L Benzin 219.9KW with Bosch 0261206204 and software ID 4D0907558S (Bosch software number 352486 ( 1037352486 )). This original file corresponds to a factory engine output of approximately 219.9 kW (~299 HP). This file is ideal for ECU cloning, restoring the car back to stock and using it as a safe base for future remaps.
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 0261206204, 4D0907558S, 352486 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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