replace muffler

Goodmorning everyone,
I am a happy owner of a WR250R 2008.
The only change I made to my bike and 'to replace the original muffler with a yoshimura. I left the servant to have no errors on the control unit and all operating normally.
I was advised to change a value of the unit after replacing the muffler, to you is ?? if you know tell me how to do ??
Sorry for my English, but I write in Italian supported by google ...

You can give the bike more fuel in the bottom of the powerband, by adjusting the CO level.

https://www.youtube.com/watch?v=q98ARDWEnUY

Jens Eskildsen wrote:

You can give the bike more fuel in the bottom of the powerband, by adjusting the CO level.

https://www.youtube.com/watch?v=q98ARDWEnUY

Excuse me but I do not understand the values from the video ..
can you explain step by step ..
Be patient

1: Hold down the top and the left button.
2: Turn key on, while holding down the buttons.
3: After 5 seconds, the display changes to "Diag"
4: Stop holding down the buttons
5: Push the top button
6: Display changes to "CO"
7: Hold down both buttons again.
8: Display changes to "0 C1"
9: Stop holding down the buttons
10: Hold down both buttons again.
11: Display changes again, showing "0 C1" and then a number in the bottom. This number in the bottom is the CO setting.
12: Stop holding down the buttons
13: The number can be changed up and down by using the buttons. The higher the number, the more gas it gets.

I think mine is set at around 6. In the video its set at 14. Try it and see what settings feels best. Remember to test with a warm bike.

You can adjust it while the bike is turned on, when you shut the bike of, it saves it all, and you have to start by step 1 if you want to change it again.


Hope it helps.

Jens Eskildsen wrote:

1: Hold down the top and the left button.
2: Turn key on, while holding down the buttons.
3: After 5 seconds, the display changes to "Diag"
4: Stop holding down the buttons
5: Push the top button
6: Display changes to "CO"
7: Hold down both buttons again.
8: Display changes to "0 C1"
9: Stop holding down the buttons
10: Hold down both buttons again.
11: Display changes again, showing "0 C1" and then a number in the bottom. This number in the bottom is the CO setting.
12: Stop holding down the buttons
13: The number can be changed up and down by using the buttons. The higher the number, the more gas it gets.

I think mine is set at around 6. In the video its set at 14. Try it and see what settings feels best. Remember to test with a warm bike.

You can adjust it while the bike is turned on, when you shut the bike of, it saves it all, and you have to start by step 1 if you want to change it again.


Hope it helps.

thanks for your patience
therefore, it should not be set to an absolute value ??
from what I can understand that, and 'set the optimal value?

Hi, the number is different from bike to bike, so not all are the same.

But most people need to get in between 0-10