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bootmod3 BMW N20/N26 Tuning Licence for F-Series | BM3 OBD Flash Remap | FREE ENET Cable | Stage 1/2 & E30 OTS Maps | Fits 125i, 220i, 228i, 320i, 328i, 420i, 428i, 520i, 528i

bootmod3 BMW N20/N26 Tuning Licence for F-Series | BM3 OBD Flash Remap | FREE ENET Cable | Stage 1/2 & E30 OTS Maps | Fits 125i, 220i, 228i, 320i, 328i, 420i, 428i, 520i, 528i

£518.00
£518.00 £518.00
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

BMW N20 N26 ECU Calibration Licence for F-Series Turbo Petrol Models with Free ENET Lead

Give your four-cylinder BMW the surge it deserves with a genuine BM3 licence that lets you reflash the engine control unit at home. This software upgrade delivers crisper throttle, stronger mid-range torque and a smoother powerband using your phone, tablet or laptop. You get a free ENET cable in the box for fast, reliable Ethernet flashing and data logging.

We run this calibration on our own cars and customer builds. Feedback is consistently positive on drivability, punch and reliability. If you have been searching for BMW ECU software, F-series petrol remap, BM3 activation key, 95 RON and 98 RON tune, ethanol blend map, E30 calibration or OTS map pack, this is the proven solution.

Suitable vehicles

Designed for BMW F-chassis with the 2.0 turbo petrol N20 and N26 engines, including:

  • 1 Series: 125i F20 F21
  • 2 Series: 220i 228i F22 F23
  • 3 Series: 320i 328i F30 F31
  • 4 Series: 420i 428i F32 F33 F36
  • 5 Series: 520i 528i F10 F11

Why this BM3 licence stands out

  • Flash through the OBD port at home with the included ENET lead and the BM3 app for iOS, Android or any web browser
  • One off‑the‑shelf map included, with further calibrations available for 95 RON, 98 RON, race fuel and E30 ethanol blends where applicable
  • Instant map switching, powerful diagnostics and detailed data logging in one platform
  • Regular cloud updates, easy reversion to stock software and DME re-lock when needed
  • Safe, repeatable gains with excellent road manners for daily use, fast road and track

Expected gains

Figures vary by fuel quality, hardware and the specific variant of the engine. Below are typical improvements based on BM3 off‑the‑shelf calibrations.

N20 low‑compression 28i

  • Stage 1 95 RON equivalent: about 16% HP and 20% torque
  • Stage 1 98 RON equivalent: about 18% HP and 22% torque
  • Stage 2 95 RON equivalent: about 20% HP and 24% torque
  • Stage 2 98 RON equivalent: about 22% HP and 25% torque
  • Stage 1 E30 blend: about 21% HP and 24% torque
  • Stage 2 E30 blend: about 25% HP and 27% torque

N20 PWG 20i

  • Stage 1 95 RON equivalent: up to 24% HP and up to 38% torque
  • Stage 1 98 RON equivalent: up to 26% HP and up to 38% torque
  • Stage 2 95 RON equivalent: up to 28% HP and up to 42% torque
  • Stage 2 98 RON equivalent: up to 30% HP and up to 42% torque
  • Stage 2 E30 or race fuel: up to 33% HP and up to 45% torque

N20 EWG 20i

  • Stage 1 95 RON equivalent: about 48% HP and 54% torque
  • Stage 1 98 RON equivalent: about 52% HP and 56% torque
  • Stage 2 95 RON equivalent: about 54% HP and 58% torque
  • Stage 2 98 RON equivalent: about 56% HP and 60% torque

Platform features

  • Mobile apps for iOS and Android plus web interface on desktop
  • One OTS map included, with optional map bundles for multiple fuels
  • Logging with hundreds of channels and high sample rates for proper analysis
  • Cloud backups for calibrations and datalogs
  • Live dashboard with real-time gauges
  • Full fault code read and clear, adaptation resets and ECU power cycle
  • Optional custom tuning via the BM3 tuner network or self-tuning with the built-in editor

Map features

  • Speed limiter removal and raised rev limit where appropriate
  • Exhaust crackle control options
  • Support for larger turbo upgrades and performance hardware
  • Petrol options for 95 RON, 98 RON, race fuel and E30 mixes
  • Custom throttle calibration
  • Backend flash compatibility for piggyback systems such as JB4
  • Cold start catalyst heat cycle and cat efficiency check removal for off‑road use only

What you receive

  • BM3 software licence for BMW N20 and N26 F‑series models
  • Free ENET Ethernet to OBD lead for flashing and logging

The optional BM3 OBD WiFi Agent is not required. It is a convenience add‑on if you prefer a cable‑free setup without a laptop.

Important notes

  • Vehicles with late 2019 software or newer may need a one‑time bench unlock before OBD flashing
  • If your DME has the latest factory update, a bench unlock may be required

Professional installation and support

OBD flashing means no ECU removal in most cases. If you would like us to handle everything, MJ Modifications in Warwickshire can install, data log and fine‑tune your setup. For fitting or bench unlock quotes email info@mjmodifications.co.uk.

Warranty and emissions

Some upgrades can affect manufacturer warranties. Certain calibrations may not be legal for road use. Please check local regulations and use responsibly.

Part number

BM3-003

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