bootmod3 BM3 BMW B48 ECU Remap & DME Flash Software | F & G Series 2.0 Turbo | Stage 1/2 OTS Maps, OBD Tuning, Map Switching | 120i 125i 220i 225i 320i 330i 330e 420i 430i 520i 530i X3 X4 20i 25i 30i | F30 F32 G20 G30 | UK Support | B48

bootmod3 bm3 DME calibration for BMW 2.0 turbo B48 engines — F chassis and G chassis

Transform the way your BMW drives with bootmod3 bm3. This trusted engine management software upgrade unleashes stronger acceleration, sharper throttle response and smoother power delivery on the B48 2.0 petrol turbo. Flash at home through the OBD port using the bm3 app or web browser, choose from ready-made Stage 1 and Stage 2 calibrations for pump fuel or ethanol blends, and enjoy OEM-like refinement with serious performance gains.

We run bm3 on our own cars and our customers consistently praise the effortless torque, refined drivability and the convenience of quick map changes. If you are searching for BMW petrol tuning in the UK, BMW B48 software upgrade, BMW 320i 330i 330e performance software, 520i 530i power upgrade, or X3 X4 20i 25i 30i tuning, this is the platform enthusiasts rely on.

Compatible vehicles — B48 2.0 petrol turbo

• 1 Series — 120i, 125i
• 2 Series — 220i, 225i
• 3 Series — 320i, 330i, 330e
• 4 Series — 420i, 430i
• 5 Series — 520i, 530i
• X3 — 20i, 25i, 30i
• X4 — 20i, 25i, 30i

What makes bm3 the go-to B48 upgrade

• Flash through the OBD port at home — cloud-based app on iOS, Android and desktop
• Pre-configured Stage 1 and Stage 2 calibrations for 95 or 98 RON, race fuel and E85 blend options
• Change maps in minutes — swap between stock and performance calibrations with ease
• Comprehensive datalogging with cloud storage and easy sharing for remote review
• Live dashboard with real-time gauges and safety monitoring
• Diagnostics — read and clear fault codes across vehicle modules
• Reset learned adaptations including octane, knock and Valvetronic
• Restore to factory software and relock when required
• Regular feature improvements delivered via the bm3 cloud

Performance options and map features

• Top speed limiter removal
• Raised rev limit where appropriate
• Exhaust sound tuning — burble calibration options
• Cold start and catalyst checks configurable for off-road use
• Support for upgraded turbochargers
• Tuning for ethanol mixes, race fuel and meth injection
• Refined throttle mapping for improved response
• Back-end flash support for piggyback systems such as JB4

Custom calibration capability

Use the included off the shelf map or work with a professional tuner from the bm3 directory for a bespoke setup. The built-in editor allows fine control so your calibration can be tailored to your hardware, fuel and performance goals.

What you will need

• ENET OBD cable — required for flashing
• bootmod3 OBD WiFi Agent — optional for wireless use, a laptop with ENET also works
• Internet connection for setup and programming

Fast, safe setup

No bench unlocking or DME removal required for supported software versions. Program your BMW safely and quickly over the OBD port using the bm3 app or web portal.

Why buy from MJ Modifications

• UK-based aftercare from a team that actually uses bm3 on its own vehicles
• Proven results and happy customers across the country
• Clear guidance on map choice, datalogging and setup

Fitting and setup services

Prefer professional installation, first flash support or datalog review for your Stage 1 or Stage 2 setup? MJ Modifications is based in Warwickshire and can handle everything for you. Request a quote at info@mjmodifications.co.uk.

Important notes

• One OTS map is included with purchase
• Certain features such as cold start and catalyst checks are intended for off-road use only
• Compatibility depends on vehicle software level and hardware

Warranty and emissions disclaimer

Modifying your vehicle may affect manufacturer warranty and emissions compliance. You are responsible for ensuring your car complies with local laws and regulations.

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