hi guys ive just ordered my losi 8 pro and looking at engines, ive seen the sirio engines at pretty good prices and wanted to know which one is better, theres a sirio #s21 bk kanai evo 2(with 2 carb adjustments) and #s21 bk kanai evo2 sti(but only 1 carb adjust).
i thought the sti one would be better but 1 carb ajust seems less profesional that the 2, any opinions?