Just did Jumper CO mod

[dudeman750]

Hi you all! I just did the jumper mod on my 03 FJR (that I love) and increased my CO +7 on each cylinder as research has advised. My question is this. These were my initial values:

#1=-4

#2=19

#3= 9

#4=20

Does this seem right? why so big a differential from -4 to 20 range on the initial setting?

Sound normal to those of you that did it?

I bumped them all up +7 from this, fired up and seems all good? I did have the lean surge at low speed and general EFI seemingly a bit lean at low throttle positions. I have the rear wheel off for a new skin and did the mod today after removing it.

BTW I will never ride anthing but this bike. (got 2 hondas too)

 

[03HiYoSilver]

dude,

Most 03's had unique #'s. So as long as you noted your original CO #'s and bumped them up evenly, you should be fine.

 

[dudeman750]

dude,
Most 03's had unique #'s. So as long as you noted your original CO #'s and bumped them up evenly, you should be fine.

Cool, I was hoping someone would say that. I imagine it is a "fine" adjustment.