BootMod3 BM3 for BMW F-Series N20/N26 – 125i 220i 228i 320i 328i 420i 428i 520i 528i
Unlock the true performance of your BMW F-Series N20/N26 with BootMod3 BM3. This is the proven OBD flash tuning solution for BMW 125i, 220i, 228i, 320i, 328i, 420i, 428i, 520i and 528i owners who want real power, sharper throttle response and smarter drivability without compromises. Nforcd customers choose BM3 for its reliability, ease of use and incredible features. We run BM3 on our own cars and on countless customer vehicles, with consistently excellent results.
Why BMW owners choose BootMod3 BM3 for N20/N26
- OBD flash tuning for BMW N20 and N26 engines in F-Series chassis – fast, safe and reversible.
- Cloud-based platform with web interface plus iOS and Android apps for simple, guided flashes.
- Map switching in seconds for different fuel grades and setups, straight from your phone.
- Offline flashing and datalogging available after initial activation.
- Use your vehicle’s own software base rather than a one-size-fits-all file.
- Flash back to true stock and re-lock the DME for servicing when required.
Perfect for these BMW models
BMW F-Series with N20/N26 2.0 turbo petrol engines, including: 125i, 220i, 228i, 320i, 328i, 420i, 428i, 520i and 528i.
Stage 1 and Stage 2 tuning for BMW N20/N26
Choose the right map for your setup and fuel. BootMod3 offers OTS (off‑the‑shelf) Stage 1 and Stage 2 calibrations tailored to common hardware configurations, plus support for different fuel grades such as 95 RON, 97/98/99 RON and ethanol blends where applicable. Want more? Work with a professional tuner via the BM3 cloud for a custom calibration.
Included and optional maps
- One OTS map included with purchase (plus any maps labelled “FREE”).
- Upgrade with the OTS Maps Bundle for access to all OTS maps for your car.
- Integrated Advanced Tuning Solution for custom map building with your chosen tuner.
Powerful features for enthusiasts
- Datalogging of hundreds of channels (up to 40 simultaneously) with easy share and charting.
- Live Dash Gauges for real‑time parameter monitoring, peak recall and configurable thresholds.
- Diagnostics: read and clear fault codes across modules, reset learned adaptations and ECUs.
- Map configuration with toggles, sliders and presets right in the app.
- Exhaust burble control from off to aggressive, switchable with drive modes.
- Boost by gear configuration.
- Top speed (VMAX) limiter removal.
- Cold start catalyst heating cycle control.
- Catalytic converter efficiency check configurable for high‑flow downpipes (off‑road use only).
- Re‑calibrated Sport Gauges on iDrive.
- Support for race fuel and ethanol blends where applicable.
Built on a proven platform
BootMod3 is a cloud-based solution with a web interface for macOS and Windows, plus mobile apps for iOS and Android. Developed and tested in‑house over years and continuously updated, BM3 remains the go‑to BMW ECU tuning platform for enthusiasts who want safe, repeatable performance and daily drivability.
Why buy from Nforcd
- Specialists in BMW performance parts and ECU tuning.
- Extensive hands‑on experience with BM3 on N20 and N26 cars.
- Excellent customer feedback and support before and after purchase.
Professional installation and support
BootMod3 BM3 is designed for simple OBD flashing at home, but if you prefer a professional service, we can help. For installation, setup, and road testing, contact Nforcd in Warwickshire for a fitting quote: Sales@nforcd.com.
Important notes
- Use the correct fuel grade for the map selected. Always follow BM3 guidance within the app.
- Features such as catalyst efficiency check OFF are intended for off‑road use only.
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