Search the Community

My 2003 Le Mans is running terrible and I'm looking into setting up the bike according the different procedures found in the Technical Topics section of this forum. While connecting the GuzziDiag software and having a good look at the faded letterings on the ECU I discovered that my bike doesn't have it's original ECU fitted. I'm not sure what ECU the bike came with but it now has a IAW 15RC PF3C from a California MY03 CAT fitted while I don't have a lambda probe on my bike. While all the different GuzziDiag screens and functions seem to work I'm having trouble setting the CO trim level. After increasing the -128 (yes, -128 !) value with the + button and clicking the Finish button nothing happens. The screen doesn't change. I can only press the - or + or Finish buttons. This made me wonder if the CO level can be changed on a 15RC CAT ECU while my bike doesn't have a lambda probe. Any ideas about what I can do to change the CO level with the 15RC ECU without the lambda probe ? Can or should I fool the ECU in thinking there's a lambda probe present ? Thx ! Walter