jetting

[sleepinR]

if i add a esr trx5 pipe and an esr silencer plus a k&N filter how should i jet the carb?...what size jets is needed?

[86 Quad R]

simply plug chop and adjust the jetting according to the plugs color.

[250r4life]

if you have a stock engine and a stock carb, and are around sea level, i wouuld probably run like a 162 main or so as a starting point. you will likely be a tad rich...