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what i gather is everyone is wary of opening the engine or using high comp.pistons or heads.so the best way of better performence is rejetting the main jet and start by using a 5 num.bigger jet.and go on increasing the jet size by 5 till u get a good setup.if for eg. u go from 115 to 130+ than u need a more unrestricted air filter.also any thing more than 135 u need a bigger pilot jet as well,also turn in air screw a bit to make mixture bit richer and than take it out based on ur feeling of power.gettin'jets is not easy but in delhi u can.this is for better mid and top end.combine this with a front sporcket one teeth smaller for low end.i feel this is most economic and easily done tuning.
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