Stage 2
Stage 2 · Petrol · 320i 150hp
BMW E46 320i Stage 2 file Siemens
BMW E46 320i Petrol 110.3 kW (150 HP) Stage 21999, Petrol, 110.3 kW (150 hp)
150 → 175 HP +25 HP +28 Nm 17% more power
Calibrated ECU file for (SW 7500255). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 320i 150hp, M52TUB20, 2L, Petrol. Engine #837 in our gains database.
- Power
- 175 HP+25 HP from 150
- Torque
- 218 Nm+28 Nm from 190
- 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 5WK9037 and software 7500255.
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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 2, Petrol.
Hardware
- Sport / decat downpipe (or sports-cat)
- High-flow air intake
- Optional: front-mount intercooler upgrade for sustained boost
Software / calibration
- Cat-warm-up & secondary lambda re-mapped for decat hardware
- Boost target raised in line with cooling capacity
- Knock / ignition advance re-trimmed
- Idle and load-transition tables refined
Stage 2 keeps the factory turbo and internals. Final figures vary slightly with the exact hardware fitted.
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 | E46 320i |
| Model year | 1999 |
| Fuel / Induction | Petrol |
| Factory power | 110.3 kW (150 HP) |
| ECU manufacturer | Siemens |
| ECU hardware | 5WK9037 |
| ECU software | 7500255 |
| Calibration stage | Stage 2 |
| Cylinder capacity | 1991 CC |
| Compression ratio | 11,0 : 1 |
| Bore × Stroke | 80,0 X 66,0 mm |
| OEM engine code | M52TUB20 |
| 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 | 150 HP | 190 Nm | — | — |
| Stage 1 | 165 HP | 208 Nm | +15 (10%) | +18 |
| Stage 2 | 175 HP | 218 Nm | +25 (16.7%) | +28 |
| Stage 3 | 248 HP | 295 Nm | +98 (65.3%) | +105 |
| Stage 4 | 293 HP | 352 Nm | +143 (95.3%) | +162 |
About this calibration file
The Stage 2 calibration for the 1999 BMW E46 320i Petrol is written for vehicles with supporting bolt-ons: a higher-flow downpipe or sports catalyst, upgraded intercooler and upgraded intake are recommended. Boost targets, fuel-rail pressure, injector duration and VGT positioning are pushed further than a Stage 1 map while keeping exhaust-gas temperatures inside safe bands.
This file matches a Siemens ECU with hardware number 5WK9037 and software version 7500255. 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: 175 HP and 218 Nm at the crank — a gain of +25 HP (17%) and +28 Nm over the factory 150 HP / 190 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
5WK9037 (Siemens) 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 Stage2 tuning file for BMW E46 320i 1999 Benzin 110.3KW with Siemens 5WK9037 (Bosch software number 7500255). The base stock vehicle for this calibration has a factory output of around 110.3 kW (~150 HP). Stage 2 is intended for cars with supporting modifications (exhaust, intake, intercooler) and delivers a stronger performance gain.
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 5WK9037, 7500255. Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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