laser racer is my tuner and he's a great guy. PM me if you'd like some more info. i was going to go E85 but i dont have forged rods since i got a 08 2.4 that i sc'd.

 

You must be the G5 he was posting about on the HPT forums

 

depending on where you set your stoich for the e85 it should be running fine all year round. I got mine tuned in late fall. so it was probably e75.. the only changes you should be making to the tune for the seasons is traction control/boost.

 

You will still have to make some fueling adjustments for the blends, but having the correct stoich can help keep the fueling close from tank to tank