Tune your BMW yourself — on proven, dyno-tested PureBoost base maps. Set boost, ignition and fuelling in the browser, download your .mhd file and flash it with the MHD Flasher app.
$149 per car, one-time · no subscription
Everything you tune
Boost
Boost ceiling per gear and RPM, plus wastegate duty correction across the MAF range.
Ignition & AFR
Wide-open-throttle ignition timing and air-fuel targets, shaped per RPM.
Fuel
91, 93 or 95 pump fuel, fixed ethanol blends from E20 to E85, or flex fuel with a sensor.
Map switching
Up to four maps in one file — switch between them in the car.
Pops & flames
Soft pops, medium pops or flames on overrun — or off.
DTC mute & more
Mute fault codes expected after hardware changes and adjust for a changed final drive.
Datalogs & virtual dyno
Upload your MHD logs, review every channel, get an automatic analysis and a power estimate.
Versions
Every tune is saved as a version. Change it any time and download a new file.
See it in action
Set your targets
Stage, fuel and map switching up top — then boost, ignition and fuelling, section by section.
Shape every curve
Tap a point to adjust it; the dashed line is the proven base map it started from.
Check every pull
Upload your MHD log and see every channel, with an automatic analysis.
Three stages, your settings
BMW N54 — figures for the N54 engine
Stage 1
up to400 hp
up to540 Nm
Up to 360 hp on completely stock hardware
- ✓Upgraded intercooler for the full 400 hp
Ready to go with the right settings.
Stage 2
up to430 hp
up to560 Nm
- ✓Upgraded intercooler
- ✓Downpipes
Ready to go with the right settings.
Stage 3
up to470 hp
up to650 Nm
- ✓Upgraded turbos
- ✓Upgraded intercooler
- ✓Downpipes
- ✓Low-pressure fuel pump (LPFP)
- ✓3.5 bar N20 TMAP sensor, activated in MHD
A base map to be refined for your car.
Power figures are “up to” values and need higher-octane fuel; above 360 hp an upgraded intercooler is required. Every stage can be refined from there — more or less power and torque, and adjustments for meth (WMI), port injection or race fuel.
What you need
A BMW with a supported engine
N54 — available now
- 135i (E82 / E88)
- 1M Coupé (E82)
- 335i / 335xi / 335is (E90 / E91 / E92 / E93)
- 535i / 535xi (E60 / E61)
- 740i / 740Li (F01 / F02)
- Z4 sDrive35i / 35is (E89)
N54 engine only for now — several of these models were also built with the N55, which is not supported at the moment.
A supported DME software
I8A0S · IJE0S · IKM0S · INA0S
The MHD Flasher app shows which software your DME runs.
MHD with MHD+
- MHD licence with a compatible OBD dongle
- MHD+ patch installed on the car — TuneLogic files require it
License
$149
EU customers pay in euros: €161 incl. VAT in Germany
- ✓One car, all three stages
- ✓One-time payment, no subscription
- ✓Unlimited tune versions and downloads
- ✓No account needed to buy — the code comes by email
EU businesses with a valid VAT ID: reverse charge, no VAT.
How it works
Buy a license
No account needed. Your license code arrives by email straight after checkout.
Add your car
Enter your VIN and the license code. The license is bound to that car for good.
Configure
Pick your stage and fuel, then dial in boost, ignition and AFR on proven maps.
Flash
Download your .mhd file and flash it with the MHD Flasher app.
Questions
What do I need?add
A BMW with a supported engine and DME software version (see “What you need” above), the MHD Flasher app with an MHD licence and a compatible OBD dongle, and the MHD+ patch installed on the car.
What is MHD+ and why do I need it?add
MHD+ is MHD's extended patch for the DME. TuneLogic files use its features — map switching, flex fuel and more — so they only run on a car with MHD+ installed. Install it with the MHD Flasher app before flashing a TuneLogic file.
Is it a subscription?add
No. You pay once per car. The licence does not expire, and you can change your tune and download new files as often as you like.
Can I use one licence on several cars?add
No — one licence is for one car. When you activate the code, it is bound to that car's VIN permanently. Until then the code is unused and can even be passed on, so you can buy it as a gift.
What happens when I sell my car?add
The licence stays bound to that car's VIN and cannot be moved to another car. A tune already flashed stays on the car.
Can I adjust a stage to my car?add
Yes. Every stage is a starting point: you can raise or lower boost, timing and fuelling from there. Stage 1 and 2 are ready to go with the right settings; Stage 3 is a base map that should be refined for your car. Meth (WMI), port injection or race fuel can be accommodated with the right map adjustments.
Are the power figures guaranteed?add
No — they are “up to” figures from well-maintained cars with the listed hardware and higher-octane fuel. Your result depends on your car, its condition, fuel and conditions.
Is a tuned car road legal?add
Changing the engine calibration is a technical modification. For use on public roads it has to be registered with an inspection body (e.g. TÜV in Germany) through an individual inspection. See our terms.
Can I get a refund?add
Your licence code is delivered immediately after payment. When ordering you agree to that, and with the delivery the right of withdrawal expires. Details in the withdrawal notice.
How do I get help?add
Use the support form in the app, or email [email protected].