Edited Date/Time:
2015 Husqvarna TC125
I have this odd issue, bike seems to want to cut out up top and not really pull as hard as I would like or as cleanly once around half throttle and up. Have had this issue for about 20 hours or so, bike has 43 on it.
I got the SXS CDI that had been recommended a thread of mine about 6 months ago and it only seemed to help with mid. I still have no over rev, it seems like the bike cuts out up top. It does not feel that different other than in the mid-range (should give me over rev). The cutting out is with the stock CDI as well, I have ridden them back to back.
I had a 180 main jet in there, NOZI needle, 4th pos, 42 pilot 1.5 out. Elevation is around 3500 feet, weather about 80 degrees both days, same track. Although it does this at sea level too...
Then I went to a 185 main, NOZH (richer), 4th pos, 42 pilot 2 1.0 out.
That seemed to do better but but I think that was mainly affected by the needle change...
I am running vp leaded 110 mixed 50/50 with 91 pump gas (comes out to around 100 octane),38:1 pre-mix. My squish is right at 1.2mm, piston (Wiseco single ring) has about 4 hours on it. New (4hours) OEM spark plug. Stock pipe, Pro Circuit shorty silencer. SXS CDI/ignition. Holes in the fender/airbox. I AM using the OEM spark plug, they recommend a different plug that costs like $65 to use with the SXS CDI. I just found one for around $20 that I ordered along with some main jets: 172, 175, 178, 188, 190 and 192.