My first e85 experience.

[dusterdragracer]

I just though I would send a little update to save others the headache. If you run e85 you really do need to test each tank, or have a wide-band hooked up so you can see when your air fuel changes drastically.

Earlier this summer when I checked my fuel from my local gas station they had switched from the winter blend 77% EtOH, to the summer blend which when I tested it was 84% EtOH. The next few tanks I just assumed it would probably stay that way for the rest of the summer (WRONG ANSWER). I've been chasing down a good tune for the summer blend ever since, not being able to quite get it. I just checked my last tank and it was 92% EtOH...my air-fuel meter was telling me it was a little lean, but I was having a hard time believing it since I was already jetting 90/100 with a PV. Well, I dropped my HSAB down from 0.036 to 0.028 and set the jets 4 steps down to compensate (86/96), ran it, AFR was about the same so I fattened it back up to 90/100. Now the AFR is reading closer to where it should be AND the car picked back up 5 hundredths (6.84 @ 99.5 at 2900' DA). I'm still a little on the lean side, so I will probably fatten it up 1-2 more steps.

So anyway, to make a long story short, check every tank or drum if you go that route.

Funny, exactly what I said earlier.....It varies, so you need to test it each time.If I was running it, I would buy 55 gallon's at a time.Your doing awesome with the E85, it's the wave of the future. The guy that bought my Valiant is running Alky now,car is more consistent. E85 made him sick, not sure what that is all about.He says talking with everybody in Virgina, 110 race gas is not very consistent, making cars very inconsistent.
I am personally really happy with Alky, but if I was converting would go with E85.