Original file
Original / Factory · Petrol · 4.4i 286hp
BMW E53 X5-4.4i original file Bosch HW 0261207106 · SW 350579
BMW E53 X5-4.4i Petrol 210.4 kW (286 HP) Original2002, Petrol, 210.4 kW (286 hp)
286 HP Factory calibration Stock backup file, 440 Nm, Petrol
Calibrated ECU file for 0261207106 (SW 350579). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 4.4i 286hp, 448S2, 4.4L, Petrol. Engine #1184 in our gains database.
- Power
- 286 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 0261207106 and software 350579.
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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 | BMW |
|---|---|
| Vehicle model | E53 X5 |
| Model year | 2002 |
| Fuel / Induction | Petrol |
| Factory power | 210.4 kW (286 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 0261207106 |
| ECU software | 350579 |
| Calibration stage | Original (Factory) |
| Cylinder capacity | 4398 CC |
| Compression ratio | 10,0 : 1 |
| Bore × Stroke | 92,0 X 82,7 mm |
| OEM engine code | 448S2 |
| 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 | 286 HP | 440 Nm | — | — |
| Stage 1 | 300 HP | 460 Nm | +14 (4.9%) | +20 |
| Stage 2 | 318 HP | 483 Nm | +32 (11.2%) | +43 |
| Stage 3 | 472 HP | 682 Nm | +186 (65%) | +242 |
| Stage 4 | 558 HP | 814 Nm | +272 (95.1%) | +374 |
About this calibration file
This is the factory (original) ECU calibration for the 2002 BMW E53 X5 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 0261207106 and software version 350579. 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
0261207106 (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 BMW E53 X5-4.4i 2002 Benzin 210.4KW with Bosch 0261207106 (Bosch software number 350579 ( 1037350579 )). This original file corresponds to a factory engine output of approximately 210.4 kW (~286 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 0261207106, 350579 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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