MG1 MULTI-FILE

Merge 2–8 calibration files (+1 quick-toggle slot) into a single switchable tune for VAG MG1 ECUs

Overview

Can switch maps on the fly and adjust ethanol content too, with engine running.

No human touches your files. Everything is processed automatically unless you open a support ticket.

How It Works

1

Pick a Package

Choose Base, Essential, or Advanced based on your needs

2

Enter VIN

Enter your 17-character Vehicle Identification Number

3

Select Options

Choose your car brand, flex-fuel option, and ECU type

4

Upload Files

Upload calibration files starting from Slot 1 (Slot 1 = 1000 RPM, Slot 2 = 2000 RPM, etc.)

5

Submit & Receive

Get your merged file ready to flash through your existing toolchain

Note: Minimum upload is 2 files. Slots unlock sequentially — fill Slot 1 before Slot 2, and so on.

There will be no refunds for incorrect VIN.

Frequently Asked Questions

VAG group MG1 ECUs only. Support for other ECUs is being worked on.
Absolutely. We have added a "Reset prevention switch" which is on by default. After you have tested the file, you can turn it off, and use mapswitch with engine off. Address for the switch is provided in document sent with the file.
  • Press and hold cancel, then press up/down to switch maps
  • Press and hold brake, then press and release accped to switch maps while holding the brake
  • Press and hold brake and cruise resume for 5sec, then ethanol live adjust can be done with cruise up/down
  • Press and hold cruise down to switch to quickToggle map
We will provide a document with the file for you to adjust parameters in the file.
No, we specialize in tools for tuners, we do not offer any tuning. However you can contact one of the registered tuners in our Tuner List
  • We don't offer any tuning services, nor do we have any plans to enter the tuning market. We have been active software providers since 2020 and have a history of only making software.
  • As for server security, the tunes are never stored on the server, they are processed by the tools and the combined file is sent over email.
  • Another point is that we do not need to know what hardware has been installed in your car, and as you know, any tuning file is worthless without information on hardware used in car.
  • Bflash .bdc, KTAG .bin, MMS Flex .bin, CMD .bin have been tested. Dimsport full reads are also supported.
  • For Autotuner, first unlock the ECU for OBD flash, then read the file in bench, combine the iflash0/1 files, then submit.
  • Virtual reads are only supported if they have code area. If your file has only calibration data, it cannot be patched.
  • You can check if your file has code area by opening in WinOLS or a hex editor and seeing if it's mostly 0x00 or 0xFF.
  • Our tool will reject VR that doesn't have code area. It does not mean the ECU is not supported, it means the file is incomplete.
An extra slot outside the main slots rotation. Lets you toggle while driving, for example into a retarded ignition map while driving, to create antilag functionality.
Adjusts fueling/lambda behavior with cruise control buttons according to ethanol blend. We will also be adding ignition/boost/load control based in future updates.
Reads your ethanol content sensor in real time and adjusts the fuelling/lambda in active map accordingly. Requires a functional ethanol content sensor connected to drivetrain CANBUS on the vehicle, like Zeitronix ECA-2.
Yes. The minimum is 2 files. You don't need to fill every slot — upload only what you need.
You can make changes before final submission. After submission, you'll need to start a new order.
Nobody. Files are handled automatically. A human only accesses them if you specifically open a support request.
A single merged binary file ready to flash. It contains all your uploaded maps with switching logic built in.
Yes, before you submit. Use the "Change Package" link at the bottom of the order form or click on the package name at the top.