MHD Super License – BMW N54

OVERVIEW

The MHD Flasher N54 E-Series is a complete flash tuning application for your BMW N54. 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 N54 E-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 completes within about 15 minutes, and further map changes take only about 60 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 and the full library of off-the-shelf maps for your engine.

SPECS

General

• Engine: BMW N54 3.0L Twin-Turbo I6, E Series
• ECU: Siemens MSD80/MSD81 DME, flashed over OBD-II — full remap, not a piggyback
• Flash time: approx. 15 minutes initial install, 60 seconds per map switch
• Stage 0: stock power, with all flash options available
• FlexFuel: true flex fuel conversion supported (MOTIV N54 hardware flex fuel kit required)
• MBoost software included — required for custom tunes targeting more than 18 PSI, either with an increased boost ceiling or a TMAP custom conversion
• Supported devices: Apple iOS 10.2 and higher, Android 6 and higher

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

• Stock: 306–340 HP
• Stage 1 (stock cars): up to 360 HP / 520 Nm · peak 15–17 PSI tapering to 10–12 PSI at redline
• Stage 1+ (upgraded FMIC recommended): up to 390 HP / 600 Nm · peak 15–17 PSI tapering to 10–12 PSI at redline
• Stage 2 (high-flow downpipes recommended): up to 380 HP / 560 Nm · peak 16–18 PSI tapering to 12–14 PSI at redline
• Stage 2+ (high-flow downpipes plus upgraded FMIC recommended): up to 420 HP / 650 Nm · peak 16–18 PSI tapering to 12–14 PSI at redline
• Ethanol mix maps (Stage 1, 1+, 2 and 2+ for E30+ blends; E25–E60): up to 440 HP / 670 Nm · peak 18 PSI tapering to 14 PSI · high-flow downpipes and upgraded FMIC recommended, plus an upgraded low pressure fuel pump for E40 and E60
• Octane variants: every pump-gas map comes in four versions — US ACN91, 91, 93, 95 / RON 93, 95, 98, 102

Flash options

• Exhaust burble (duration in base and sport mode, aggressiveness, minimum RPM)
• Kick-down deactivation
• Cold start noise reduction
• Variable coolant targets
• MT shift bog fix
• Wastegate rattle fix
• Top speed limiter (Vmax) removal
• Linear throttle mapping
• Power limiting per gear in percent
• Individual minimum idle RPM
• Support for several aftermarket parts

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 (availability depends on DME software version if the car is not flashed with MHD)
• 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)
• Access to the full MHD off-the-shelf map library for this engine, including the ethanol blend maps
• 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. Not included with the license-only variant of this listing.
• Alternative supported interface if you already own one: K-DCAN cable plus an OTG adapter (Android 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.
• No DME unlock is required for the N54 E Series platform.
• Optional — to run the FlexFuel maps you also need an ethanol content analyzer: a MOTIV N54 hardware flex fuel kit (not currently stocked by Speed Logic — contact us for availability).

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.
• xDrive models are supported.
• 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

Years are US model years. MHD lists 2006–2010 for the 135i, 335i and 535i; those are production years, and the first US model years were 2007 (335i) and 2008 (135i, 535i). E9x and E6x xDrive cars were badged 335xi / 535xi before the 2009 model year. The 335i Touring (E91) was not sold in the US. Engine changeovers to the N55 follow the production date rather than the model year, so cars built around a changeover should be confirmed by VIN with Speed Logic before ordering.