ORIGINAL / FACTORY Petrol 4.2 FSI 335hp

Audi A6 4.2 V8 Petrol 250.1 kW (340 HP) Original

080160240320 1000200030004000500060007000 335 HP +0 420 Nm +0 HP Nm RPM 0100200300400
Stock Original / Factory HP / Nm projection
335 HP Factory calibration
Stock backup file — 420 Nm · Petrol

Calibrated ECU file for . Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.

16,293 calibration files in catalog · 9,693 engines · 400+ ECU platforms · Engineering since 2012 · WhatsApp support · < 30 min first response
Performance Projection Engine #466 · Gains DB
MATCHED ENGINE 4.2 FSI 335hp BAT 4.2L Petrol Factory
080160240320 1000200030004000500060007000 335 HP +0 420 Nm +0 HP Nm RPM 0100200300400
Stock Factory HP (left) · Nm (right) · Curve shape typical for this ECU family
Real data from Gains API Dyno curve = typical ECU-family projection Final gains depend on fuel, altitude, wear

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
Model year 2004
Displacement 4.2 L
Fuel / Induction Petrol
Factory power 250.1 kW (340 HP)
ECU manufacturer Bosch
ECU hardware 0261206016
Calibration stage Original (Factory)
Cylinder capacity 4163 CC
Compression ratio 11,0 : 1
Bore × Stroke 84,5 X 92,8 mm
OEM engine code BAT
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.

Engine4.2 FSI 335hp CodeBAT Displacement4.2L Capacity4163 CC Compression11,0 : 1 Bore × Stroke84,5 X 92,8 mm FuelPetrol Engine ID#466
Stage Power Torque Δ HP Δ Nm
Original / Factory 335 HP 420 Nm — —
Stage 1 355 HP 445 Nm +20 (6%) +25
Fuel economy gain (vs. factory map, same driving profile): combined cycle −8% , full-load cruise −12%. Diesel calibrations typically net bigger combined-cycle savings thanks to shorter duty-cycle on low-load driving.

About this calibration file

This is the factory (original) ECU calibration for the 2004 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 0261206016. 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

The file is written for the exact ECU hardware 0261206016 (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.

Two reasons. First, if your ECU write failed mid-flash and you need a verified stock image to recover from — this file restores the unit to the exact calibration it left the factory with. Second, if you plan to experiment with a tune and want a known-good rollback point that is guaranteed identical to a Audi dealer programming.

Instant. Immediately after payment clears (typically < 30 seconds on Stripe / PayPal), the download link appears in your account dashboard and is also emailed to you. The link is a signed, expiring URL — download it within 24 hours; if it expires, just re-generate from the dashboard at any time.

Pre-corrected. Every tuning file we sell is processed through CHKSuite (our in-house checksum engine) before it reaches your download link. You can flash it directly with KESS, KTAG, AutoTuner, CMD, Dimsport or any other supported tool — no extra checksum step required. A zero-CRC write to a modern Bosch/Siemens/Delphi ECU bricks the unit, so this is non-negotiable.

Contact us on WhatsApp or through the dashboard support thread. Free revisions are included for the same stage on the same ECU — send us a live log (via VCDS, INPA, EcuConnect, OBDeleven or similar) and we'll adjust timing, boost, rail pressure or smoke limits and re-issue the file. A failed flash itself (write aborted, bricked ECU) is recoverable with our Original file and a bench tool.

This product contains a complete original ECU backup (stock file) for Audi A6 4.2 V8 2004 Benzin 250.1KW with Bosch 0261206016 and software ID 4D0907558A (Bosch software number 359573 ( 1037359573 )). This original file corresponds to a factory engine output of approximately 250.1 kW (~340 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 0261206016, 4D0907558A, 359573 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.

SHA-256 fingerprintEB1E3A5A A6F86B5C 17A96E8D B134D848 2A442D92 6F4DA32F 8B9EB895 2A4918CD

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