The defacto guide to tuning your car for e85.

[timboku]

Dhp you can just import the 42.5 ifr chart thats built into power tunner.

[chrsmi1]

Dhp you can just import the 42.5 ifr chart thats built into power tunner.

I tried this and i get an error #130, error generating import menu. So that's out. But i searched the forum and found a couple of threads about changing it manually and thats how i came up with my 33/42.5 calculation.
I'm pretty sure it's not a vac leak since before E85 trims were always close to 0. After switching to bigger injectors on stockish tune they stayed between +10 and 0. Normally somewhere around 7, or while cruising up to 13, but never negative and almost never 16.4.
I'm convinced the new trims are related to me messing something up while tuning the ifr and skew rate.
Even more so because I reflashed my pcm back to the old tune after the crooked numbers a bit ago and it went back to how it was, with no crazy stft and not pegged around 16 ltft. Drove around for 30 mins, car was good, numbers looked normal.

I don't want to thread jack your great guide Frosty so i'll stop posting my tuning fail questions here.