Original file
Original / Factory · Petrol · 1.8 20v 125hp
Audi A4 1.8 20V original file Bosch HW 0261204873 · 8D0906018D · SW 350722
Audi A4 1.8 20V Petrol 91.9 kW (125 HP) Original2000, Petrol, 91.9 kW (125 hp)
125 HP Factory calibration Stock backup file, 170 Nm, Petrol
Calibrated ECU file for 0261204873 (SW 350722). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 1.8 20v 125hp, ARG, 1.8L, Petrol. Engine #10631 in our gains database.
- Power
- 125 HPfactory calibration
- Torque
- 170 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 0261204873 and software 350722.
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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 | A4 |
| Model year | 2000 |
| Displacement | 1.8 L |
| Fuel / Induction | Petrol |
| Factory power | 91.9 kW (125 HP) |
| ECU manufacturer | Bosch |
| ECU ID | 8D0906018D |
| ECU hardware | 0261204873 |
| ECU software | 350722 |
| Calibration stage | Original (Factory) |
| OEM engine code | ARG |
| 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 | 125 HP | 170 Nm | — | — |
| Stage 1 | 135 HP | 185 Nm | +10 (8%) | +15 |
| Stage 2 | 143 HP | 194 Nm | +18 (14.4%) | +24 |
| Stage 3 | 206 HP | 264 Nm | +81 (64.8%) | +94 |
| Stage 4 | 244 HP | 315 Nm | +119 (95.2%) | +145 |
About this calibration file
This is the factory (original) ECU calibration for the 2000 Audi A4 1.8L 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 0261204873 and software version 350722. 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
0261204873 (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 A4 1.8 20V 2000 Benzin 91.9KW with Bosch 0261204873 and software ID 8D0906018D (Bosch software number 350722 ( 1037350722 )). This original file corresponds to a factory engine output of approximately 91.9 kW (~125 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 0261204873, 8D0906018D, 350722 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
AB50451D 0170097A 96AC1A3E B218AEAE 2CEC6F63 6E0EE1F2 19CBAC64 A0D1F367