Ethanol tuned vs Ethanol percentage flutuation during winter/summer seasons.

General question regarding Ethanol. So I've gotten tuned on approx. 56% ethanol (according to GM sensor on Hondata kpro V4). Question is, will a summer blend (usually higher ethanol content) affect my tune significantly? More ethanol = richer mixture? The station I get my ethanol shows it could be 51%-83%.

Tune is not using the ethanol sensor (sensor not set to active).

Thx.