Original file
Original / Factory · Diesel · 4.0 TDI 275hp
Audi A8 4.0 TDI V8 Quattro original file Bosch · 4E0907409B · SW 368451
Audi A8 4.0 TDI V8 Quattro Turbo Diesel 202 kW (275 HP)Turbo diesel, 202 kW (275 hp)
275 HP Factory calibration Stock backup file, 650 Nm, Diesel
Calibrated ECU file for 4E0907409B (SW 368451). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 4.0 TDI 275hp, ASE, 3.9L, Diesel. Engine #522 in our gains database.
- Power
- 275 HPfactory calibration
- Torque
- 650 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 4E0907409B and software 368451.
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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, 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.
Product details
This product contains a complete original ECU backup (stock file) for Audi A8 4.0 TDI V8 Quattro Turbo-Diesel 202KW with Bosch 4E0907409B (Bosch software number 368451 ( 1037368451 )). This original file corresponds to a factory engine output of approximately 202 kW (~275 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 4E0907409B, 368451 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
2758405F 2141536E 904ABF43 E4249C8D 2FEB758B 97C6E8CB 06B76AC9 BD60C0B0Frequently asked questions
How do I flash this file?
Use your preferred tuning tool (KESS, KTAG, AutoTuner, CMD, etc.) to write the file to the ECU via OBD, bench, or boot mode.
Is the checksum corrected?
Yes. Every file we sell has verified checksums — ready to flash without additional correction tools.
What if I need a revision?
Contact us via WhatsApp or the support dashboard. Revisions for the same stage are free.