What Size Jet Should I Have In A 17.5 Carb? on a peugeot speedfight 2 70cc pm tunning 360 exhaust,polini variator,polini 6.5g rollers,polini belt,polini clutch spring,BGM Pro V2 Inlet Manifold/ Reed Valve Kit
what size jet do you have now ?? allso look about on the forums im sure this question has been asked 100000000000 times, plus there is now size jet you need to get a jet box around the same size jet you have now and just test them intill you get the correct 1 its all trial and error with jetting
And do a plug chop, til you find one that gets the white insulation on the plug a nice tan color......Start on a big jet, and work your way down......Every set up is different!