BMW X4 ECU remapping
139 files available
About remapping
The BMW X4 accounts for 139 files in our catalogue, with the 2.0d four-cylinder diesel leading, alongside the 3.0d straight-six, the 20i petrol and the M40i at the top of the range. It is the coupe-SUV counterpart to the X3.
Stage 1 makes up 122 files — a very clean profile — followed by 13 speed limiter removals and 7 Stage 2. The ECUs include EDC17C50 and EDC17CP45 on the diesels, plus MEVD17.2G, MEVD17.2.9, MG1CS003 and MD1CP002 on the petrol units.
Model highlights
- ›122 Stage 1 files of 139 total: a very clean performance profile.
- ›The 2.0d four-cylinder diesel is the most represented engine.
- ›Coverage of the 3.0d straight-six and the M40i petrol.
- ›ECUs including EDC17C50, EDC17CP45, MEVD17.2G, MG1CS003 and MD1CP002.
Fuel split
Engines and gains
| Engine | Fuel | Stock | Stage 1 | Stage 2 |
|---|---|---|---|---|
| M40i | Petrol | 354 hp | 400 hp +46 | — |
| 35d | Diesel | 313 hp | 358 hp +45 | 380 hp +67 |
| xDrive 28i | Petrol | 258 hp | 277 hp +19 | — |
| 30i (B48) | Petrol | 252 hp | 308 hp +56 | — |
| 28i | Petrol | 245 hp | 288 hp +43 | — |
| 20d | Diesel | 190 hp | 220 hp +30 | — |
Indicative figures from the technical catalogue; confirmed when you request the file.
Power curve
30i (B48)
ECUs
Generations covered
ECU manufacturers
Available services
Remapping services
Stage 1
Optimising the original map with no hardware changes: more power and torque, full reliability.
Speed limiter removal
Removal of the factory speed limiter.
Stage 2
Remap for vehicles with mechanical upgrades (intake, exhaust, intercooler…).
EGR off
EGR valve management to reduce soot issues and improve response.
Pops & bangs
Pops & bangs exhaust effect (on lift-off and gear changes).
DPF off
Particulate filter solution: no more regenerations or blockage warnings.
DTC delete
Clearing of fault codes (DTC) that can't be removed via diagnosis.
Why remap with Repromatronic
- ✓More power and torque with engine-safe tuning
- ✓Sharper throttle response and nicer driving
- ✓Potential fuel savings in normal driving
- ✓Files built from the original and 100% reversible
- ✓Made by technicians with thousands of projects behind them
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Log in as a professionalFrequently asked questions
Do you work on the M40i?
Yes, the M40i is present in our catalogue. Being turbocharged, it offers substantial headroom.
Does it share mechanicals with the X3?
Yes, the X4 is the coupe-SUV version of the X3 and shares engines and ECU families, broadening our coverage.
Does it affect xDrive?
No. The work is done on the engine ECU and does not alter the operation of the all-wheel-drive system.