Stage 1
Stage 1 · Diesel · 325D 197hp
BMW E90-E91 325D Stage 1 file Bosch HW 0281014543 · SW 390114
BMW E90-E91 325D Turbo Diesel 144.9 kW (197 HP) Stage 12007, Turbo diesel, 144.9 kW (197 hp)
197 → 233 HP +36 HP +90 Nm 18% more power
Calibrated ECU file for 0281014543 (SW 390114). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 325D 197hp, 306D3, Diesel. Engine #9458 in our gains database.
- Power
- 233 HP+36 HP from 197
- Torque
- 490 Nm+90 Nm from 400
- Fuel economy
- −8 %−12% full load
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 0281014543 and software 390114.
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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: Stage 1, Diesel.
Hardware
- No hardware changes required: runs on completely stock hardware
Software / calibration
- Boost pressure optimised within factory turbo limits
- Injection timing & quantity remapped
- Smoke / EGT limiters refined
- DTCs left intact, factory safeties preserved
Stage 1 is a software-only calibration. Compatible with stock turbo, injectors, intercooler, exhaust and clutch.
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 | E90 E91 325d |
| Model year | 2007 |
| Fuel / Induction | Turbo Diesel |
| Factory power | 144.9 kW (197 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 0281014543 |
| ECU software | 390114 |
| Calibration stage | Stage 1 |
| OEM engine code | 306D3 |
| 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 | 197 HP | 400 Nm | — | — |
| Stage 1 | 233 HP | 490 Nm | +36 (18.3%) | +90 |
| Stage 2 | 280 HP | 588 Nm | +83 (42.1%) | +188 |
| Stage 3 | 296 HP | 620 Nm | +99 (50.3%) | +220 |
| Stage 4 | 355 HP | 740 Nm | +158 (80.2%) | +340 |
About this calibration file
The Stage 1 calibration for the 2007 BMW E90 E91 325d Turbo Diesel is a drop-in remap that works on completely stock hardware — no turbo, injector, intercooler or fuel-system upgrades required. Injection timing, boost targets, rail-pressure limits and torque maps are rebalanced to extract the safe headroom the OEM leaves untouched for fleet-fuel tolerance, altitude margin and warranty buffer.
This file matches a Bosch ECU with hardware number 0281014543 and software version 390114. 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.
Projected output on a healthy, stock-hardware example of this engine: 233 HP and 490 Nm at the crank — a gain of +36 HP (18%) and +90 Nm over the factory 197 HP / 400 Nm baseline. These numbers are sourced from our Vehicle Performance Database, which aggregates dyno results across this engine family. Real-world gains depend on fuel grade, ambient temperature, mechanical condition and intake/exhaust state.
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
0281014543 (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 calibrated Stage1 tuning file for BMW E90-E91 325D 2007 Turbo-Diesel 144.9KW with Bosch 0281014543 (Bosch software number 390114 ( 1037390114 )). The base stock vehicle for this calibration has a factory output of around 144.9 kW (~197 HP). This Stage 1 calibration is designed for stock hardware, offering a safe and reliable increase in power and torque for daily use.
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 0281014543, 390114 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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