Original file
Original / Factory · Petrol · 44i 4400 V8 315hp
BMW E53 X5 4.4i original file Bosch HW 0261209020 · SW 374077
BMW E53 X5 4.4i Petrol 235.4 kW (320 HP) Original2005, Petrol, 235.4 kW (320 hp)
315 HP Factory calibration Stock backup file, 438 Nm, Petrol
Calibrated ECU file for 0261209020 (SW 374077). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 44i 4400 V8 315hp, N62B44, Petrol. Engine #9681 in our gains database.
- Power
- 315 HPfactory calibration
- Torque
- 438 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 0261209020 and software 374077.
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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 | 2005 |
| Fuel / Induction | Petrol |
| Factory power | 235.4 kW (320 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 0261209020 |
| ECU software | 374077 |
| Calibration stage | Original (Factory) |
| OEM engine code | N62B44 |
| 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 | 315 HP | 438 Nm | — | — |
| Stage 1 | 346 HP | 485 Nm | +31 (9.8%) | +47 |
| Stage 2 | 367 HP | 509 Nm | +52 (16.5%) | +71 |
| Stage 3 | 520 HP | 679 Nm | +205 (65.1%) | +241 |
| Stage 4 | 614 HP | 810 Nm | +299 (94.9%) | +372 |
About this calibration file
This is the factory (original) ECU calibration for the 2005 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 0261209020 and software version 374077. 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
0261209020 (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 2005 Benzin 235.4KW with Bosch 0261209020 (Bosch software number 374077 ( 1037374077 )). This original file corresponds to a factory engine output of approximately 235.4 kW (~320 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 0261209020, 374077 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
800B9671 2DA91C66 4D8A9181 36E4B201 368DC9DD A9FFDFC0 3DF06D16 D51225DD