I find the NE needles run really good, but as above.. you need to find the right spot.
I'm usually 300-1000M and a cold day here is under 20C. Temps usually well above that and humidity up in the 60+%. I run NEDW#2 in my 250, or N3CW#3.. going leaner on either needle see's the torque run off on small throttle. Going richer adds in some burble and you see some loading up in tech terrain.
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