CBR250RR Stock ECU Binary Definition & XDF

ℹ️ About

I find it difficult to flash my bike’s ECU because the definition file is not available for free. The ones sold on the Internet cost a lot and are not really complete. So I decided to analyze the binary myself and publish the known definition, which address does what.

This information wasn’t publicly available on th Internet at the time of my first publication, so my hope is that this project will be able to help individual/user/amateur tuners tune their own bike. The goal of this project is to make public this definition and improve them(mappings and their categorization).

Your help is one of the most important aspect of this project, there are a lot of maps that could be grouped to certain Gear, Riding Modes, etc.

How to Help Improve

Go to the repository page
Test the free-to-downlaod XDF that I released OR read the definition tables in the repository page
If you find something, go to the discussions tab and click on new discussion or report to me
I will revise the XDF and the definition tables

Scope

Supported ECU Model is 38770-K64-N04. Original bin checksum value: C2FF

📄📑 Binary Definition & XDF Release

CBR250RR XDF Parameter Tree I have released a usable XDF for 38770-K64-N04 and is free to download. I also published the whole binary definition that includes fuel map, ignition map, limiters, and more. XDF Download & definition is available in the Github repository page

Warning

I’m not responsible for any damage/consequences that occurs. This documentation is aimed to be a guide for individual/user/amateur tuners.
Some if not all information published here might not be accurate or straight up incorrect, anything that you do with this information is entirely your responsibility, with that in mind, I very much accept corrections. If you find any inaccurate information, I will make sure to revise them.

CBR250RR ECU Binary Definition & XDF (38770-K64-N04)

Stock ECU binary definition for CBR250RR 38770-K64-N04. Mapping details & XDF File available