Stoich AFR question

[john3400]

Currently i am set at 14.7002 if I want to go richer in fuel I lower this number to lets say 13.002. Or do I higher it to get a richer fuel mixture.

[xonelith]

Higher the number, the leaner

The way I understand it:
air to fuel ratio
units of air per 1 unit of fuel
14.7002 = 14.7002 units of air per 1 unit of fuel
higher the number implies more air

I might be way off, but it makes sense to me.

As for changing this number, I wouldn't bother. I've been told 'Don't touch that!!' without a real explanation, and I can't really see a reason to touch it assuming the rest of my tune is ok.

Changing it to 13.002 doesn't make sense, as the only time you will want to run that is during PE (separate settings for this).