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I’m running 92 pump. I have ran the stock silencer and currently the fmf 2.1 same result. Not sure on the ecu being replaced I got the bike recently and has 14hrs on it. I did already try the 540 main and it made no real difference as my problems lie on the bottom end, the bike runs great on...

Some really good info on here, Iv read through about all of it. I have a 2022 ktm 125 xc that’s a headache.. currently trying the specs from the first page and on initial setup it was lean to the point of not moving under its own weight. revved great on stand though. Currently setup as 5.0 slide from jd...