So I’ve had my KQ-300 for about 3 months now and I love it. The bike has plenty of power for my needs but I keep reading about various performance mods that have been available over the years?
I’m just curious to know what all mods were/are available? From my research there are,
1. Big bore kits
2. Slip on mufflers, (Cobra Exhaust?)
What else is there or has there been for these sleepy little engine? Any cams available from other engines with similar top ends?
Also, is there any benefit to changing the jetting on a factory bike?
My KQ has the idle screw set to 2-5/8 turns out from lightly seated as the book indicates and it is a little rich at idle, it will start no choke every time if I crack the throttle open, and that’s hot or cold. For those who tune these Mikunis does turning the screw in lean or enrich the mixture?