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Anyone running E-85 fuel?

E10 stoich - 14.1

E85 stoich- 9.7

Is that not 31% ?

I've not seen anything run well at 1.08 lambda
Ok, I see your point. If I take a gasoline tune and go across the map and increase it by 31%, the car will run like crap. I've found about 21 to 25% is what works. Then if you set target af of 15.1 give or take, see what the car likes, it'll use less fuel. I'm not here to argue, I'm just sharing what I've learned and experienced running it in my own cars and others. I'm going to keep it to myself from now on.
 
I run E85 (flexfuel) in my 68 Charger.
I have a 5.7 Hemi swap with fuel injection.
Engine is stock along with injectors.
I do have a return-style electric fuel pump (340 lph) and a custom tune for Ethanol.
Runs fantastic, more power due to more timing compared to pump (93) I was running.
Plus it is much cheaper per gallon locally at $3.60 a gallon compared to 93 octane currently at 5.80 per gallon.
Ryan
 
Ok, I see your point. If I take a gasoline tune and go across the map and increase it by 31%, the car will run like crap. I've found about 21 to 25% is what works. Then if you set target af of 15.1 give or take, see what the car likes, it'll use less fuel. I'm not here to argue, I'm just sharing what I've learned and experienced running it in my own cars and others. I'm going to keep it to myself from now on.

Same here, just sharing after having calibrated hundreds of flex fuel cars.
 
It is not 30% more fuel. If you do the math it's about 23%. If you utilize the octane, oxygenation, and cooling effects, you can run it leaner than gas, meaning you can get that down from 23% roughly. My 14 5.0 stang got 20 mpg on the highway and 16 combined. And was considerably cheaper than 93 with more hp. For your average vehicle not wanting performance and not understanding or able to optimize it, it is indeed a waste if time.

If it worked out to 23% for you, great. The many forums I have read of people telling their experience & doing their math, all say 30%.
 
I just made the switch to E85.
I purchased the 950cfm Holley Ultra XP E85 carb..
My Pump and other items are already good for E85, so no additional costs were associated in the swap.
I can share a few things that I've noticed so far, and hopefully squash a few of the wives tails..
Lets start with the seat of the pants difference in power... WOW explains it well.... From the lower RPM extra grunt, to the continued pull at higher RPM's is amazing!
Now onto the engine temps difference... It definitely runs MUCH cooler than gasoline... I had issues with temps rising quickly while driving in town (light to light) or cruising in second gear without stops... Not anymore !!!
Ignition timing is something you might here about... If you already have optimal ignition timing with the required octane level gasoline for your cyl pressure, leave it be!!!!
Increased fuel consumption seems to be true to the 30%ish range over gasoline with an already correct tune...
I'll be pulling plugs later today to get a good look at that.... I can provide an update at a later time.
 
At the Co-op in Sturgis, it's $3.16 per gallon on 3/8/22
 
Not in my Mopar, but I recently acquired a factory Flex Fuel vehicle that I decided to test out E-85 in. Well the mileage officially sucks. The minute the computer detects the fuel, the "distance to empty" meter drops by quite a bit and the MPG (for my American friends) drops from about 32mpg highway, to 26-27(ish). Feels good to pay less at the pump, but it's a mere illusion, really not saving anything here. Maybe it has a bit more get up and go, but it's a V6 :D
 
Due to california gas prices, my friend is using E-85 in her flex fuel DD expedition. Mileage dropped from 16 mpg on gas, to 12mpg on E85. She says it's about a break even.
Imo, E85 is GREAT, for a boosted or high compression app for a raced car, not so great for daily or very occasional street use.
 
Due to california gas prices, my friend is using E-85 in her flex fuel DD expedition. Mileage dropped from 16 mpg on gas, to 12mpg on E85. She says it's about a break even.
Imo, E85 is GREAT, for a boosted or high compression app for a raced car, not so great for daily or very occasional street use.
Yeah, this seems to the answer, however, I'm still @ $5 gallon for non Oxy here
 
Yeah, this seems to the answer, however, I'm still @ $5 gallon for non Oxy here
You're lucky you can buy non-oxy, oxygenation is mandated by state law here in california, meaning 10%, or more, alcohol.
I haven't checked the price of E85 here in quite a while, but I heard a giddy news reader announce that average price for regular here in L.A. county has gone down in price for five straight days..... to $6.50 for 87 10%.
 
You're lucky you can buy non-oxy, oxygenation is mandated by state law here in california, meaning 10%, or more, alcohol.
I haven't checked the price of E85 here in quite a while, but I heard a giddy news reader announce that average price for regular here in L.A. county has gone down in price for five straight days..... to $6.50 for 87 10%.
Omg! Move! While you still can
 
Omg! Move! While you still can
I did! I bought a house in Arizona, but i still have a house and cars in california. Came back out to california a week or so ago, to do some stuff and get some things to go back to AZ. Best AZ price when I left, was $3.33 for 87, $4.04 for diesel.
I know where to get E85 here, I'm almost curious enough to drive a couple miles to see what the price is. Maybe make a small jog over, next trip that direction.....
 
I did! I bought a house in Arizona, but i still have a house and cars in california. Came back out to california a week or so ago, to do some stuff and get some things to go back to AZ. Best AZ price when I left, was $3.33 for 87, $4.04 for diesel.
I know where to get E85 here, I'm almost curious enough to drive a couple miles to see what the price is. Maybe make a small jog over, next trip that direction.....
Good for you! Smart man.
 
In the neighborhood of the local station that sells E85, so I checked prices.
E85-$3.69
87-$6.39
91-$6.89
Gasoline prices typical for around here from a name-brand station.
 
In the neighborhood of the local station that sells E85, so I checked prices.
E85-$3.69
87-$6.39
91-$6.89
Gasoline prices typical for around here from a name-brand station.
Soo, my question still stands....if a guy does diy e85 changes, is it worth it with the 30percent in milage loss? I'm starting to think so ...
 
Soo, my question still stands....if a guy does diy e85 changes, is it worth it with the 30percent in milage loss? I'm starting to think so ...
I think so....
I'm running higher compression ratio pistons and an aftermarket close chamber head.. The price of 93 octane and extra booster is far more expensive than the loss of fuel economy.
Av gas is also much more expensive than E85....
I guess it's important to understand engine requirements in octane levels for cyl pressures in your particular application, when deciding what fuel types to choose from..
The added benefits of cooling is a huge plus for my application as well..
 
Soo, my question still stands....if a guy does diy e85 changes, is it worth it with the 30percent in milage loss? I'm starting to think so ...
Funny thing about that. I was talking to my friend with the flex fuel expedition about her E85 use. She is getting it at $3.35, and says it's only 2mpg worse than 87 in her truck. She also says that using a couple gallons of 87 in a tank full of E85 gets the 2mpg back.
I cannot verify any of that, but she is my best friend and has no reason to lie about that to me.
So, in her truck, in her experience, E 85 is a huge win compared to $6.50 87 10%.
 
I think so....
I'm running higher compression ratio pistons and an aftermarket close chamber head.. The price of 93 octane and extra booster is far more expensive than the loss of fuel economy.
Av gas is also much more expensive than E85....
I guess it's important to understand engine requirements in octane levels for cyl pressures in your particular application, when deciding what fuel types to choose from..
The added benefits of cooling is a huge plus for my application as well..
The avgas I buy in Arizona is cheaper than pump premium in california.
 
I think so....
I'm running higher compression ratio pistons and an aftermarket close chamber head.. The price of 93 octane and extra booster is far more expensive than the loss of fuel economy.
Av gas is also much more expensive than E85....
I guess it's important to understand engine requirements in octane levels for cyl pressures in your particular application, when deciding what fuel types to choose from..
The added benefits of cooling is a huge plus for my application as well..
IF I was running a very high compression engine, or boost, or nitrous, E85 would certainly be in the picture. The conversion would certainly make sense.
I have a friend and his son who are both using E85. (My friend is running a 95mm turbo on a 408 LS, his son is running twin gt45s on a 363 in a mustang that has been 200mph..........in the eighth 【with a twin turbo 632 for a previous owner】)
 
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