Original file
Original / Factory · Petrol · 4.2 V8 354hp
Audi S5 4.2 FSI V8 original file Bosch HW 0261S02623 · 8T0907560M · SW 399146
Audi S5 4.2 FSI V8 Petrol 269.9 kW (367 HP)2008, Petrol, 269.9 kW (367 hp)
354 HP Factory calibration Stock backup file, 440 Nm, Petrol
Calibrated ECU file for 0261S02623 (SW 399146). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 4.2 V8 354hp, CAUA, 4.2L, Petrol. Engine #687 in our gains database.
- Power
- 354 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 0261S02623 and software 399146.
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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.
Product details
This product contains a complete original ECU backup (stock file) for Audi S5 4.2 FSI V8 2008 Benzin 269.9KW with Bosch 0261S02623 and software ID 8T0907560M (Bosch software number 399146 ( 1037399146 )). This original file corresponds to a factory engine output of approximately 269.9 kW (~367 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 0261S02623, 8T0907560M, 399146 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
AD900886 3505D07A A38D4073 53F3EBC4 3E539B31 6555B3A5 9751CD8B FBF5A32EFrequently 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.