MHD Super License – BMW B58 (F + G Series)

OVERVIEW

The MHD Flasher F+G Series is a complete flash tuning application for your BMW and Toyota A90 Supra. Unlike a piggyback module it performs full DME remapping while retaining all OEM safety mechanisms, which allows for maximum performance, maximum safety and unrivaled drivability.

You can install MHD at home and start tuning immediately. Download the MHD Flasher F+G Series app, connect the MHD wireless adapter to your vehicle's OBD-II port and pair it to your Apple iOS or Android device, then start the app — the initial installation takes about 2–3.5 minutes with the MHD WiFi adapter, and further map changes take only 10–19 seconds. You can return the vehicle to the factory OEM flash at any point, and no initial backup is required.

The Super License bundles every MHD function in one package: the Flasher license, the Monitor (datalogging and gauge) license, all three B58 map packs and the MHD+ custom code features.

SPECS

General

• Engine: BMW B58 3.0L Turbo I6, Gen 1 and Gen 2 (B58TU), F Series and G Series, plus Toyota GR Supra — not compatible with B58 Gen 3
• ECU: Bosch DME, flashed over OBD-II — full remap, not a piggyback
• Flash time: 2–3.5 minutes initial install, 10–19 seconds per map switch using the MHD WiFi adapter
• Stage 0: stock power, with all flash options available
• Supported devices: Apple iOS 10.2 and higher, Android 6 and higher

Off-the-shelf maps by PureBoost (road and dyno tested)

• Stage 1 – B58 Gen 1 (stock cars): 91 oct / 95 RON up to 380 HP / 550 Nm · 93 oct / 98–100 RON up to 410 HP / 570 Nm · 95 oct / 102 RON up to 430 HP / 600 Nm · E30 mix up to 450 HP / 630 Nm · full E85 up to 410 HP / 580 Nm (fuel system limited)
• Stage 1 – B58 Gen 2 (stock cars): 91 oct / 95 RON up to 400 HP / 560 Nm · 93 oct / 98–100 RON up to 430 HP / 580 Nm · 95 oct / 102 RON up to 440 HP / 600 Nm · E40 mix up to 460 HP / 640 Nm · full E85 up to 430 HP / 600 Nm (fuel system limited)
• Stage 2 – B58 Gen 1 (full bolt-ons): 91 oct / 95 RON up to 390 HP / 560 Nm (fuel quality limited) · 93 oct / 98–100 RON up to 440 HP / 620 Nm · 95 oct / 102 RON up to 460 HP / 630 Nm · E30 mix up to 470 HP / 650 Nm · full E85 up to 410 HP / 580 Nm (fuel system limited)
• Stage 2 – B58 Gen 2 (full bolt-ons): 91 oct / 95 RON up to 410 HP / 570 Nm (fuel quality limited) · 93 oct / 98–100 RON up to 460 HP / 650 Nm · 95 oct / 102 RON up to 500 HP / 680 Nm · E40 mix 500+ HP / 700+ Nm · full E85 up to 440 HP / 600 Nm (fuel system limited)
• Stage 2 + HPFP – B58 Gen 1 only (full bolt-ons and an upgraded HPFP from B58 Gen 2 or better): 91 oct / 95 RON up to 400 HP / 570 Nm (fuel quality limited) · 93 oct / 98–100 RON up to 460 HP / 630 Nm (fuel quality limited) · 95 oct / 102 RON up to 480 HP / 670 Nm · E40 mix 500+ HP / 680+ Nm · full E85 up to 440 HP / 600 Nm (fuel system limited)
• Plug-in hybrids (45e): up to 113 HP of hybrid boost on each Gen 2 map

Flash options

• Exhaust burble (duration in base and sport mode, aggressiveness, minimum / maximum speed, minimum / maximum RPM)
• Startup roar and cold start noise reduction
• Exhaust flap always open in sport mode
• Top speed limiter (Vmax) removal
• Sport / racing cooling mode for coolant and sport cooling mode for the intercooler
• Support for all upgraded HPFPs
• Overrun brap

MHD+ features (included)

• On-the-fly map switching: 4 slots per stage with per-slot fuel quality and a power level slider from 100% down to 60% in 5% steps; works alongside flex fuel
• Antilag: hold the cruise control RES button (speed down on B58 Gen 2) and apply heavy throttle; coolant temp, EGT, maximum duration and cooldown safeties; adjustable boost target for OTS users
• Switchable burble aggressiveness and duration per map slot
• Cold start noise reduction per map slot
• On-the-fly exhaust flap control (always open, always closed or OEM) from the MHD+ Live Menu
• Ethanol content quick view when a compatible ethanol content analyzer is installed
• Full 2-way CANBUS integration with the Motiv ReFlex controller, including DME limp on PI injector error and DME control of external wastegates; advanced ReFlex integration on B58 Gen 1 and Gen 2 gives full control of supplemental port injection and auxiliary outputs, and Gen 1 adds two EGT inputs, an extra pressure input and custom safeties
• Overrun brap noise on lift-off
• No lift shift on 6-speed manual cars
• Custom TCU limiter removal while keeping all safeties and OEM launch control
• KnockCEL for custom tunes (CEL blinks when timing corrections pass a tuner-set threshold)
• MHD Real-Time Tuning: edit every table live with the engine running during custom tuning, without reflashing
• MHD MaxCool: runs the fan, lowers the coolant target to 72°C and sets the thermostat and water pumps to high cooling to fight heat soak; switched on from the LIVE tab

Monitor and diagnostics

• Configurable gauge layout with up to 8 fully adjustable gauges
• 50+ engine parameters available at a glance and logged in the background
• Datalogging to standard CSV files with a built-in log viewer; free log analysis offered by MHD
• Available monitors include boost, boost target, lambda (AFR), intake air temp, ignition timing per cylinder, coolant temp, oil temp, oil pressure, transmission temp, HPFP, throttle position, wastegate duty cycle, RPM, speed and EGT
• Advanced parameters not exposed by BMW, such as timing corrections per cylinder, boost setpoint and active torque limiter
• Full transmission (8HP) logging on B58 Gen 2 cars: clutch states, solenoid currents, torque converter slip and clutch slip, logged alongside the DME
• Read / delete engine fault codes and reset adaptations
• Return to the factory OEM flash at any time; no initial backup required
• Custom tuner maps and JB4 backend maps can be loaded in addition to the MHD OTS maps

PARTS INCLUDED

• One MHD Super License activation code, delivered by e-mail within 12 hours of payment
• License is issued against a single vehicle VIN and your MHD account e-mail, and is not transferable to another car, owner or account
• Flasher license (MHD OTS maps, JB4 backend maps and custom tuner maps)
• Monitor license (gauges, 50+ live parameters, CSV datalogging and log viewer)
• All three MHD B58 map packs, including the ethanol blend maps
• MHD+ custom code features
• Free MHD app download from the Apple App Store or Google Play
• No hardware is included with the license-only variant. The bundle variant on this listing adds the MHD Universal WiFi adapter.

TECH RESOURCES

Additional Parts Required

• MHD Universal WIFI Adapter — required to flash. The license is software only; you must have a supported interface to connect the app to the car. MHD supports only its Universal adapter for this app. Not included with the license-only variant of this listing.
• Alternative supported interface if you already own one: ENET cable plus a Lightning adapter (iOS only). MHD recommends its own WiFi adapter and cannot support third-party hardware.
• An Apple iOS 10.2+ or Android 6+ mobile device running the free MHD Flasher app — supplied by the customer.
• A free MHD account. Give us the account e-mail and the vehicle VIN at checkout; the license is bound to both.
• A battery charger or maintainer. MHD states a charger is highly recommended for the initial full write (install and uninstall) and for long writes on slower adapters.
• A DME unlock on many cars (see Notes below for which ones). Use the "Unlock Check" button in the MHD app to find out. For B58 cars we offer the ECU Unlock Service for BMW B58 Engines.
• Optional — to run the FlexFuel maps you also need an ethanol content analyzer: MHD FlexFuel Kit - F Series B48/B58/N55/S55 (F Series) or MHD FlexFuel Kit - BMW G Series / Toyota Supra (G Series / Supra).

Installation

• Step-by-step guide to setup, flashing, datalogging and returning to stock: Speed Logic MHD Tuning Guide (it links to every section of MHD's own user guide)
• Installation is performed by the customer through the MHD app over the OBD-II port; no workshop fitment is required.

Notes

• All purchases are final. MHD licenses are non-refundable and non-transferable.
• Your activation code is e-mailed within 12 hours of payment.
• Each license is tied to one vehicle VIN and one MHD account e-mail. A different car or account needs a new license.
• DME unlock: B58 Gen 1 (USA) cars built before 06/2020 with updated software may need a bench unlock, and B58 Gen 2 cars built before 06/2020 always do.
• Cars built after 06/2020 need a special unlock from FEMTO or AutoTuner; MHD recommends their full unlock, which supports all MHD+ features. MHD detects the unlock automatically. See the MHD Tuning Guide for how DME unlocks work.
• Not compatible with B58 Gen 3 engines — see the note under Vehicle Applications.
• For off-road use only.
• Not sure? Send us your VIN and we'll confirm fitment and any unlock needs before you order.

VEHICLE APPLICATIONS

Compatible with B58 Gen 1 and Gen 2 only. Not compatible with B58 Gen 3 (B58TU2, 48V mild hybrid), which includes the 2025+ M340i and M440i, 2027+ M240i (G42), 2024+ 540i (G60), 2023+ 740i (G70), 2024+ X5 / X6 40i, 2023+ X7 40i and the X3 M50 (G45). Generation changeovers follow the production date rather than the model year, and European-market M240i / M340i / M440i built from late 2025 already have the updated engine, so cars built around a changeover should be confirmed by VIN / build date with Speed Logic before ordering. Rear-wheel-drive and xDrive versions are both supported wherever the table lists both.