Anyone here running E85?

Yep. Very happy with it so far.

same here

good to hear. Did you have any unexpected issues? Any issues with the TEC setup? How did your timing curve change from gasoline? What size injectors are you using with gas and with alcohol? I was using 75 lbs with gas and now it appears that I need 160s which I bought but not have put in. I am the beginning of the change over and any help would be appricated.

Mike

No lessons learned that can be shared?

Sorry -I've been out f town. I haven't had any big issues - in general the timing requirements are very similar to gasoline, so you can use the same timing map. If you were having to dial out a lot of timing to reduce ping with gasoline, you can probably dial some timing back in.

As far as fuel goes, a good starting point is to add 30% fuel across the board (i.e. multiply both IOT (POT) and TOG by 1.3) - you should make sure that your pump and injectors can supply this. A good target AFR for max power is 6.97, which is quite a bit richer vs. stoich than you can usefully go with gas. Stoich is 9.77:1, and I've been able to go as lean as 11.5-12:1 on cruise to recover some semblance of fuel economy.

You should also note that your Wintec display is calibrated for gasoline (stoich = 14.64), so you'll have to do some conversion for E85 AFRs. Your EGO sensor doesn't measure AFRs directly. It is really measuring "Lambda", which is normalized to stoich (stoich = 1, lean is > 1, rich is <1). The Wintec software then multiplies the lambda value by 14.64 (stoich for gasoline) to get AFR. So, when you are running 6.97 AFR with E85, your Lambda value is 9.77/6.97 = 0.713. Since Wintec ASSumes you are running gas, it will display 0.713*14.64 = 10.44 AFR. Hopefully that makes sense.

I've been able to find some useful info on E85 here:
http://e85forum.com

Thank you. That info is a big help. As I start the tuning I am sure I will have more questions, this gets me going in the right direction.

Mike

So on the AFR Table Display would you change all the cells that display 14.6 to 10.44?

Sorry I'm just a little lost here but I learn quick...

The 10.44 number is for the max power parts of your AFR table, and will equate to 6.97 actual AFR for E85. Part throttle will still read 14.64 as before (but will actually equate to 9.77), and if you want to run a bit lean on light loads then use 15 or 16 (which will actually be 10 to 10.67 AFR on E85)

Okay,makes sense now. So max power rich is 6.97 max power lean is 8.47 if I'm in the 7.5-7.7 (11.24afr) range I should be good 'til I can get on the dyno next week.

Sounds like you've got it. Unlike Gasoline, E85 continues to make more power with richer mixtures, so I'd recommend staying on the 6.97 side of things if you can. The richer mixtures supposedly give the full advantage of the 105 octane rating, too.