UGVW / Audi · BMW
Maps you can
actually read.
Calibration tools built one platform at a time by someone who reverse-engineered the binaries. Full suites for Bosch ME7 on VW and Audi — edit, checksum, flash and log from one app. Calibration editors for BMW DMEs and the ZF 8HP gearbox.
Windows 10 / 11 · Buy the platform once, tune as many cars as you like · Nothing phones home
Pick your
platform
Every address in a build is tied to one software version, so each platform gets its own build rather than one binary that guesses. Engine and gearbox, VW / Audi and BMW.
VW / Audi — full suite: edit, checksum, flash, log
BMW — calibration editors
What every
build does
Every platform gets the same editor. The ME7 suites for VW and Audi add the cable side on top of it.
Editor — every platform
Maps you can read
Named, scaled and grouped by what they do, not listed by address. Heat-shaded grids with a pop-out 3D surface on the same colour ramp, and a warning before you edit an axis six other maps share.
Editor — every platform
Definitions checked against the file
Nothing ships until it has been read back out of a factory image of its own software version — in bounds, right dimensions, axes sane. Read every map and write it back and the file comes out byte-identical, which is the only way to know the tool understands what it is showing you.
Editor — every platform
Compare two files
Diff a file against another one through the definitions rather than at byte level: which named maps moved, how many cells, and by how much. How you read a tune you were handed, or check your own work before it goes on the car.
ME7 suites only — VW / Audi
Read and write over OBD
Any J2534 cable that does K-line. Checksums corrected before the write, then verified. Dry run, recovery mode, and a debug console that tells you what actually happened.
ME7 suites only — VW / Audi
Live data, same cable
Reads existing ME7Logger definitions, picks up your channels and rate, and writes CSV that opens in any log viewer — German channel descriptions translated to English on the way out. Live values and a pop-out graph while you drive.
The BMW builds are editors. They open a calibration file, let you change it and save it again — they do not touch the car. Pull the file off the ECU and flash it back with whatever tool you already use for that; checksums and logging on the BMW side stay with that tool, and these builds do not pretend otherwise.
What's being
built now
Development notes as the work happens, including what has not been proven yet. The dev blog has the detail.
Simplified ME7.5
One VE table, simple boost
Cylinder filling from a single VE table, and a boost controller made of a base duty table plus a little correction, both editable live. Knock control and closed-loop fuelling stay factory. Simulated; logging mode goes on a car first.
Antilag · ME7.5 / ME7.1.1
On a 2.0, and on a V8
Rolling antilag has run on a 2.0 with 1.8T software. Rotational idle is ported to the 4.2 V8, map switching is on the 1.8T, and the live trace has been corrected.
Rolling antilag · ME7.5
Fuel cut, and rotational idle
Antilag with its own ignition timing, a mode that cuts fuel to whole cylinders instead of spark, and rotational idle on three taps of the brake. Separate timing has run on a car; the two new modes are simulated and go on a car next.
1.8T on 2.0 · ME7.5
1.8T software, 2.0 hardware
Running 1.8T software on the far more common 2.0 ECUs. The intake air temperature pin turned out to need nothing, and a build without the boost sensor has run on a car.
Cables
it works with
For the VW / Audi ME7 suites. Any J2534 pass-through that can do ISO9141 / KWP2000 on K-line — the tool drives the cable through its own PassThru DLL, so if the manufacturer ships a working driver it will work. The BMW editors need no cable at all.
Any J2534 pass-through
It has to speak ISO9141 / ISO14230 on K-line. Tactrix OpenPort 2.0 and Topdon ArtiDiag both work. Browse to the DLL, or let it find one in the registry.
Use the 32-bit driver
The tool is a 32-bit build, so it needs the 32-bit PassThru DLL. The device picker flags a 64-bit mismatch up front rather than failing halfway through a session.
Not supported
Dumb FTDI or KKL 409.1 cables, Prolific clones, and anything CAN-only. There is no raw-serial path — the ECU needs a K-line handshake these cannot do.
Read this before you flash
Flashing applies to the VW / Audi ME7 suites. The BMW builds never touch the car — they only open and save files.
- Save a full read of your stock file and keep a copy somewhere other than the tuning laptop. It is the only way back.
- Put a charger on the battery. Voltage sag mid-write is the most common way this goes wrong.
- Close everything else, turn off sleep, and do not unplug the cable while a write is running.
- If a write does get interrupted, the ECU needs boot-mode recovery on the bench. This tool does not do boot mode — that is a separate job with a separate rig.
- Sold for off-road and competition use. What you do with it on a road car is on you.
New to ME7? Read the S4wiki tuning guide before you change anything. This tool gives you the maps; it will not tell you what to put in them.
