ASK THE MXPERTS: MY HUSQVARNA FC250 SEEMS TO HAVE LOST ITS PEP

 

 

INITIALIZING YOUR ECU

Dear MXperts,
My 2022 Husqvarna FC250 seemed to slow down suddenly. It still runs okay, but it doesn’t have the pep it had before. I checked everything from the fuel supply lines to the spark plug to the wiring loom, but nothing was wrong. What can I do?

If we were betting men, we would assume that your bike ran great in the spring and summer and then suddenly slowed down as fall and winter approached. If this is the case, you need to teach your ECU what the atmospheric conditions are like every time there are significant temperature, humidity, or altitude changes. Initializing the ECU allows the black box’s sensors to learn the information it needs for different conditions and keeps everything up to date. It is not hard to initialize a Husqvarna or KTM ECU. Here is how to do it: (1) Start your engine, but do not touch the throttle. (2) Let the bike run for four minutes, but do not let it overheat. (3) After the time is up, your ECU sensors will be attuned to that day’s atmospheric conditions. The MXA wrecking crew initializes our KTM and Husky black boxes every race—and sometimes we re-initialize them when the afternoon sun heats up the air.

If this does not work, take your bike to your local friendly Husqvarna dealer and have them initialize your ECU while connected to their proprietary software.