Original file
Original / Factory · Petrol · 523i 2500 24v 168hp
BMW E39 525TD original file Bosch · SW 351513
BMW E39 525TD Turbo Petrol 119.9 kW (163 HP) Original2001, Turbo petrol, 119.9 kW (163 hp)
168 HP Factory calibration Stock backup file, 234 Nm, Petrol
Calibrated ECU file for (SW 351513). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 523i 2500 24v 168hp, M52B25TU, Petrol. Engine #9540 in our gains database.
- Power
- 168 HPfactory calibration
- Torque
- 234 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 Bosch and software 351513.
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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 | E39 525td |
| Model year | 2001 |
| Fuel / Induction | Petrol |
| Factory power | 119.9 kW (163 HP) |
| ECU manufacturer | Bosch |
| ECU software | 351513 |
| Calibration stage | Original (Factory) |
| OEM engine code | M52B25TU |
| 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 | 168 HP | 234 Nm | — | — |
| Stage 1 | 184 HP | 259 Nm | +16 (9.5%) | +25 |
| Stage 2 | 195 HP | 272 Nm | +27 (16.1%) | +38 |
| Stage 3 | 277 HP | 363 Nm | +109 (64.9%) | +129 |
| Stage 4 | 328 HP | 433 Nm | +160 (95.2%) | +199 |
About this calibration file
This is the factory (original) ECU calibration for the 2001 BMW E39 525td 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 and software version 351513. 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
Product details
This product contains a complete original ECU backup (stock file) for BMW E39 525TD 2001 Turbo-Benzin 119.9KW with Bosch Bosch (Bosch software number 351513 ( 1037351513 )). This original file corresponds to a factory engine output of approximately 119.9 kW (~163 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 Bosch, 351513 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
19328931 3C2251F3 08BB3BF2 817C8C2C 0CB3DFA7 36540836 2A38C73F A214CEB8