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Original file

Original / Factory · Diesel · 2.5 V6 TDI 163hp

Audi A4 2.5 TDI original file Bosch HW 0281011444 · 8E0907401T · SW 367801

Audi A4 2.5 TDI Turbo Diesel 117.7 kW (160 HP) Original

2005, Turbo diesel, 117.7 kW (160 hp)

163 HP Factory calibration Stock backup file, 350 Nm, Diesel

Calibrated ECU file for 0281011444 (SW 367801). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.

Performance projection

Matched engine: 2.5 V6 TDI 163hp, AKN, 2.5L, Diesel. Engine #304 in our gains database.

04080120160 10002000300040005000 163 HP +0 350 Nm +0 HP Nm RPM 0100200300400
Stock · Factory · HP (left) · Nm (right) · Curve shape typical for this ECU family
Power
163 HPfactory calibration
Torque
350 Nmfactory calibration

Real data from Gains API. Dyno curve = typical ECU-family projection. Final gains depend on fuel, altitude, wear.

How it works

  1. Read your ECU

    With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.

  2. Match the numbers

    Your read must show hardware 0281011444 and software 367801.

  3. Pay and download

    Card, Apple Pay or Google Pay. The file is in your account straight away.

  4. 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, Diesel.

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 A4
Model year 2005
Displacement 2.5 L
Fuel / Induction Turbo Diesel
Factory power 117.7 kW (160 HP)
ECU manufacturer Bosch
ECU ID 8E0907401T
ECU hardware 0281011444
ECU software 367801
Calibration stage Original (Factory)
Cylinder capacity 2496 CC
Compression ratio 18,0 : 1
Bore × Stroke 78,3 X 86,4 mm
OEM engine code AKN
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.

Engine2.5 V6 TDI 163hp CodeAKN Displacement2.5L Capacity2496 CC Compression18,0 : 1 Bore × Stroke78,3 X 86,4 mm FuelDiesel Engine ID#304
Stage Power Torque Δ HP Δ Nm
Original / Factory 163 HP 350 Nm — —
Stage 1 190 HP 420 Nm +27 (16.6%) +70
Stage 2 200 HP 437 Nm +37 (22.7%) +87
Stage 3 245 HP 543 Nm +82 (50.3%) +193
Stage 4 293 HP 648 Nm +130 (79.8%) +298
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 2005 Audi A4 2.5L Turbo Diesel, 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 0281011444 and software version 367801. 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 0281011444 (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. As soon as the payment clears, the file appears under Downloads in your account and the link is emailed to you. It does not expire: sign in and download it again whenever you need it.

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.

Product details

This product contains a complete original ECU backup (stock file) for Audi A4 2.5 TDI 2005 Turbodiesel 117.7KW with Bosch 0281011444 and software ID 8E0907401T (Bosch software number 367801 ( 1037367801 )). This original file corresponds to a factory engine output of approximately 117.7 kW (~160 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 0281011444, 8E0907401T, 367801 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.

SHA-256 fingerprint5FD51FEA 4E9B27C6 C9DE3283 81367ACE E3AB9671 53DF35E3 09E67BA2 17A614EF