Hi,guys, is not the best place to ask this question but I don't want to start a nother topic,so my dilemma is: witch one of these needles N1EF and N2ZW are good to put on my bike ec300 09, for better bottom end power? Someone use N2ZW? And for pilot and main I think to start whit 40 and 172 . Tem. -4~5 degC ,elevation 300m-1300m.
Thanks.
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