like it says, here in oregon the entire state has been mandated e10 at every station, my car is in need of a new tune anyway, should i expect any bonus or is it going to be non-existent

 

Most gas stations have been E10 for a long time anyway. Some are E20 for certain times of the year. IF you are thinking it will equate to more power chances are not so much. Nothing a good solid tune wouldnt make on its own merits anyway.

 

E10 is called oxygenated gas. It is better than non-oxygenated kind, because it has ethanol in it. It has a higher knock threshold.

So you will benefit from a retune.