A MHD alternative that tunes the gearbox too
If you want the engine and the ZF 8-speed tuned together, without buying two tools, this is what Hellflash does differently.
MHD and Hellflash
MHD is a popular phone-first BMW engine tuning app for iOS and Android, with off-the-shelf maps and its MHD+ custom features. It focuses on the engine; tuning the ZF 8HP gearbox as well usually means a second tool.
Hellflash tunes the engine and the ZF 8HP gearbox from one app on one £300 licence, with the sound settings and a full map editor included.
What you get with Hellflash
- Stage 1
- Stock hardware. About +50 to 70 hp on 98 RON, estimated.
- Stage 2
- Downpipe fitted. About +80 to 110 hp on 98 RON, estimated.
- Stage 3
- Downpipe and intercooler. The firmest shifts and the loudest pops.
- 95 or 98 RON
- Every stage is matched to the fuel you actually use.
- Shift speed
- Firmer, faster steps beyond stock.
- Shift points
- Upshift rpm for every gear in Drive, Sport and Manual.
- Ignition-cut upshifts
- The crack on a hard upshift.
- Throttle blips
- Rev-matched downshifts.
- Launch control
- Launch torque and how it blends in.
- Torque limit per gear
- Lets the box hold a tuned engine.
- Max rpm
- Raise the shift-up and rev limit.
- True manual
- Holds your gear, even at the limiter.
- Auto start-stop off
- For good.
- Valet mode
- Capped torque and gentle shifts for someone else.
When MHD is the better pick
If you want to flash from your phone today, or you need flex fuel and map switching right now, MHD has them. Hellflash runs on a Windows laptop for now, and those features arrive as free updates.
How it works
- Plug in
- An ENET cable (about £15) from the OBD port to a Windows laptop, with a charger on the battery.
- Read your car
- Hellflash finds the engine and gearbox computers and saves a full backup. Free.
- Pick a tune
- A stage, a few plain choices, the full editor, or describe it to Hellflash AI.
- Flash and drive
- Checksums corrected, every write verified, back to stock any time.
Engine flashing works today on the B58 with the MG1CS003 engine computer (2016 to 2019 F-series and the early G-series 40i cars). The ZF 8HP gearbox flash is proven on a real car.
What it costs
£300 once, per car. It covers the engine and the gearbox, with updates for that car, and Hellflash AI free as it rolls out. No subscription and no credits.
MHD is a trademark of its owner. Hellflash is not affiliated with MHD. Details about other products come from their public pages and may change.
Questions
Anything else, email support@hellflash.com
Is Hellflash a MHD alternative?
Yes. Hellflash tunes the BMW engine and the ZF 8HP gearbox in one app on one £300 licence. If you want to flash from your phone today, or you need flex fuel and map switching right now, MHD has them. Hellflash runs on a Windows laptop for now, and those features arrive as free updates.
Does Hellflash tune the gearbox?
Yes. 34 ZF 8HP settings including shift speed, shift points, launch control, throttle blips and pops on upshift. Gearbox flashing is proven on a real car.
Can I go back to stock?
Yes. Hellflash reads and saves your car's own software before the first flash, so you can put it back any time.
What do I need?
A standard ENET cable (OBD to Ethernet), a Windows laptop and a battery charger on the car while you flash. iPhone and Android apps are on the way.
How much does it cost?
£300, one time, per car. It covers the engine and the gearbox, with updates for that car. No subscription and no credits.
Start with a free read of your car.
Read your car for free first. If it fits, it’s £300 once and it’s yours.