Originally Posted by Jerm13

First off, do you know what it does. If not here you go.

It adjusts the where low end of the tuning ends and the high end takes over. You can use this adjustment to move where that point is, either earlier or later in the RPM.

95% of people will adjust it because something else is off, whether its the high or low end, and it will move the tune of the engine higher or lower and usually further out of tune. Then they end up chasing it until they readjust it and start over.

There are a couple videos on YouTube about it if you are still interested...
My suggestion.... put some sealant over it and forget about it.