So, I just checked my plug and it was black. Which indicates a rich condition after running it with the UNI...what???
Also just adjusted the chain slack, it was over an 1". It quieted things down a lot.
Also want to adjust the idle. i feel like it was idling kind of high. The engine seems to run great, but it wants to move on its own, so I adjusted the idle down using the idle screw. How low should I go? Is there such thing as too low an idle as long as its running and going ok? I know with the sportster I was running, you couldn't run the idle too low or the oil wouldn't circulate properly. Are there any ill effects to having a low idle on a GY6?
Would running the kart for a minute or two at a time with a high idle in my garage help account for the rich looking plug i checked?