I have "inherited" an exhaust (DJ Muffler..? see photo) to replace the NK that fell apart a few weeks back, and have tried various jetting options to get it to run sweeter, but am experiencing issues. I have a 25ml delorto (Mb carb kit) with a 110 main jet with needle on 2nd clip from top.. "slightly" nipped up at prolonged 3/4 throttle at weekend, plug was light grey. I raised the needle to the 2nd clip from bottom and now splutters on anything in 1st, 2nd &3rd above half throttle. I am going to raise the needle back to its original position today. I had not changed the needle from purchase so dont know whet size it is.. does anyone have any experience with this exhaust / carb combination or suggest a possible solution to the setup.
Standard Indian 200 barrel .. I might add that the cut on the panel is a temporary measure.. any further information needed let me know
Thanks
