Hi!
Here in Finland with temps around 0 C this jetting is lean (at least for the 07 EC250 which, as Glenn wrote, it requires much bigger jets than older models). First I went to 45 pilot with air screw at 1-1.5 turns out. Just yesterday moved the needle (N1EF) clip to 4th position from top improving the low-mid response and torque but still I got pinging/detonation/loss of power when I tried to use full power once, with the 180 main jet. Today I will go straight to an 190 and test on the weekend. At least to go rich to get rid off the pinging.
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