E85 help on EECV vehicles

[Power Surge]

Going to be doing an E85 tune for an older EECV vehicle. This will be my first E85 tune. I have already tuned the vehicle for pump gas, so there is an existing custom tune that works great.

Does anyone have pointers for making changes to the existing tune, to switch to E85? Any input or advice would be awesome.

Thanks everyone

[Jn2]

change stoich and as long as your MAF curve was accurate it should stay that way when you swap to e85, you will prob need to change base cold table to run richer during cold start to help during Winters. I forget what all is in the EECV, but I believe those tables do exist.

[Power Surge]

change stoich and as long as your MAF curve was accurate it should stay that way when you swap to e85, you will prob need to change base cold table to run richer during cold start to help during Winters. I forget what all is in the EECV, but I believe those tables do exist.

So if I just change the stoich AF scalar, I don't need to change any of the fuel table values?

What's the preferred E85 stoich value?

What is target A/F for E85 for a supercharged application?