It's easy to remove the ECU from your 2020-2024 KLX 300 S-SM. We will also cover how to adjust your KLX idle speed. If you need to send in your ECU for programming, here is how to remove it. After the remapping, you will have to adjust your idle speed. Here is how to adjust your idle when you get it back. You may or may not have to change your idle speed. You also have to change your idle speed when you remove the secondary throttle plate, in the throttle body, which we highly recommend doing.