What jetting do I need to do when changing to an aftermarket pipe like a DG 6 into 1?
I have a 79′ with a DG header. I did not put the pipe on the bike I bought it that way. This bike runs excellent. It also has a K & N #KA1350 air filter. I pulled a float bowl yesterday and it is running 105 mains. You can buy the main jets for $5.00 each from Kawasaki or elsewhere. Dynajet has a kit with jets and needles with notches in them which is what you really need. They’re listed on ebay all the time. My bike has a fair amount of miles on the DG and the pipes are all very clean, NO bluing, so I would start jetting for a DG at the 105 size and go down from there. Some people go as far down as a 95 I hear. My bike is a 79′.