What about those of us running E85??? What AFR should we be at to be safe?

 

Here are some common pump gas to E85 conversions:

18.0:1=12.000
17.5:1=11.666
17.0:1=11.333
16.5:1=11.000
16.0:1=10.666
15.5:1=10.333
15.0:1=10.000
14.5:1=9.666
14.0:1=9.333
13.5:1=9.000
13.0:1=8.666
12.5:1=8.333
12.0:1=8.000
11.5:1=7.666
11.0:1=7.333


Apparently some people's AFR's will go as high as 13.0 in the winter because E85 doesn't atomize as well in colder temperatures. I'd say 11.8-12.1, but I'm no expert on E85 tuning.


-Bink

 

I was seeing 13's the other night when I was driving, I let off immediately of course and have just been staying off the WOT boost to keep it all safe...

I have to say its been ridiculously cold down here in Florida for this time of year and not driving your car for a 2 days + a mini battery + E85 + 2150cc FIC's = the car not wanting to kick over all that easy

 

Haha! See 13 !

Believe it or not some people have multiple tunes for E85....winter / summer (even winter day time and winter night time).

With a 13.0 AFR I would definitely turn the boost down and *consider* a re-tune for the winter if you will be running E85 consistently. Though, turning down the boost should help out quite a bit.


-Bink

 

I live in South Florida and we get nasty cold snaps from time to time (37 degrees this morning) nothing that is really consistent to justify paying $200 to retune.

I do have to say its quite entertaining wondering if my car will start on days like this