View Single Post
      11-28-2012, 08:12 PM   #6641
COBB Tuning
Major
COBB Tuning's Avatar
233
Rep
1,051
Posts

Drives: 335i
Join Date: Dec 2010
Location: Austin, TX

iTrader: (0)

Quote:
Originally Posted by sparkyblue View Post
I actually ran 50/50 E85/ACN91 for a month and it pulled hard. I logged a few times and timing seemed good and the LTFT/STFT did not exceed 32%.

Would it cause any harm to run that high of a mix?

According to the calculator you linked I should be mixing 9 gallons of 91 & 5 gallons of E85 to get 36.5%. (I'd like to run 5% higher ethanol content as a buffer).
If you run more ethanol, you can use ATR to adjust the fuel scalar accordingly and get your trims as close to zero as possible (there's also a table in the tuning guide for mixing ratio to fuel scalar value). Just continue to log and make sure long/short term trims are good. Enjoy the extra power at an affordable price

-Josh
Appreciate 0