ECU Tuning File Service & WinOLS Mappacks

MM RACING provides ECU tuning files, WinOLS mappacks and technical support for tuning professionals. Use this guide to choose a service, connect your EVC account and purchase credits for the MM RACING reseller database.

Choose Your ECU File Service

  • ECU tuning files: contact us with the original file, vehicle details, ECU identification and the changes you require so we can check compatibility and quote for the work.
  • WinOLS mappacks and Super Mappacks: browse the available projects in the MM RACING reseller database. Match the ECU and software version to your project before purchasing.
  • Checksum calculation: send us the file and ECU details to confirm whether individual checksum calculation is available.
  • ECU unlocking: see our Bosch MDG1 mail-in unlocking service and Continental GPEC unlocking service. Confirm compatibility and shipping arrangements before sending an ECU.

Contact MM RACING about a file or ECU

Connect Your WinOLS Account

  1. Check the requirements. You need an EVC account and the full version of WinOLS 5.
  2. Create your MM RACING account. Enter your EVC customer number (WinOLS ID) on the account registration page. This identifies the EVC account to be linked to our reseller database.
  3. Confirm reseller access. Once you have been registered as our customer, follow the confirmation link sent by EVC. Check your spam folder if the message is missing.
  4. Refresh WinOLS registration. Open Miscellaneous > Updates + Registration in WinOLS, then look for MM RACING in the reseller database.

For EVC’s current instructions, see How to become a WinOLS reseller customer.

Buy and Use MM RACING Reseller Credits

Choose an OLSx credit package and sign in before checkout. Check that the WinOLS ID in your account belongs to the EVC account you use for MM RACING reseller access.

Credits purchased here are for the MM RACING reseller database. They do not include a WinOLS software licence. The website processes your credit order; project selection and the corresponding credit deduction take place in WinOLS. Review the project’s credit price before confirming a purchase.

Need Help with Access or a Credit Order?

If MM RACING is missing from WinOLS, confirm the EVC email and refresh your WinOLS registration. If access or a paid credit order still needs attention, contact us with your order number, EVC customer number and the message shown in WinOLS.

For file enquiries, include the vehicle make, model, engine, ECU hardware and software identifiers, reading tool and your original read file where available.