Stage 2
Stage 2 · Diesel · 320d MHEV 190hp
BMW E90-E91- E92-E93 2.0d Stage 2 file Bosch · SW 504977
BMW E90-E91- E92-E93 2.0d Turbo Diesel 135.3 kW (184 HP) Stage 2Turbo diesel, 135.3 kW (184 hp)
190 → 231 HP +41 HP +99 Nm 22% more power
Calibrated ECU file for 7CK5KF121A (SW 504977). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 320d MHEV 190hp, 2L, Diesel. Engine #888 in our gains database.
- Power
- 231 HP+41 HP from 190
- Torque
- 499 Nm+99 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 X and software 504977.
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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, Diesel.
Hardware
- Sport / decat downpipe (or DPF removal where legally permitted off-road)
- High-flow air intake (recommended)
- Optional: catback exhaust for lower backpressure
Software / calibration
- DPF / EGR / AdBlue switched off in software (where lawful)
- Boost & rail pressure raised to match new airflow
- Smoke limiter relaxed in line with hardware
- Lambda + EGT safeties retuned
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 | E90 E91 |
| Fuel / Induction | Turbo Diesel |
| Factory power | 135.3 kW (184 HP) |
| ECU manufacturer | Bosch |
| ECU hardware | 7CK5KF121A |
| ECU software | 504977 |
| Calibration stage | Stage 2 |
| Cylinder capacity | 1995 CC |
| Compression ratio | 16,5 : 1 |
| Bore × Stroke | 84,0 X 90,0 mm |
| OEM engine code | 320d MHEV 190hp |
| 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 | 190 HP | 400 Nm | — | — |
| Stage 1 | 220 HP | 480 Nm | +30 (15.8%) | +80 |
| Stage 2 | 231 HP | 499 Nm | +41 (21.6%) | +99 |
| Stage 3 | 285 HP | 620 Nm | +95 (50%) | +220 |
| Stage 4 | 342 HP | 740 Nm | +152 (80%) | +340 |
About this calibration file
The Stage 2 calibration for the BMW E90 E91 Turbo Diesel 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 Bosch ECU with hardware number 7CK5KF121A and software version 504977. 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: 231 HP and 499 Nm at the crank — a gain of +41 HP (22%) and +99 Nm over the factory 190 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
7CK5KF121A (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 Stage2 tuning file for BMW E90-E91- E92-E93 2.0d Turbo-Diesel 135.3KW with Bosch X and software ID 7CK5KF121A (Bosch software number 504977 ( 1037504977 )). The base stock vehicle for this calibration has a factory output of around 135.3 kW (~184 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 X, 7CK5KF121A, 504977 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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