E85..with FI
E85..with FI I have heard some very good stuff about e85 and it's resistance to detonation. I was wanting to hear some feedback from guy's that are currently using it. I am also wondering what it is like in comparison to c16, cost not being a factor. If anyone has any experience with e85 and a stock motor that would be right up my alley. Thanks.
Widebands work off Lambda, O2 content. So stoichiometric with E85 is still going to read ~14.7 on the AFR gauge (like you said, set up for gas), unless you have a wideband controller that allows you to select different fuels:
Lamda . A/F Gas . A/F E70 . A/F E85 . A/F E100
1.027. . 15.1 . . . .10.89 . . . 10.03 . . . .9.25
1.014. . 14.9 . . . .10.74 . . . .9.90 . . . .9.13
1.000. 14.700 . . 10.600 . . .9.765 . . .9.0078 Stoichiometric
0.986. . 14.5 . . . .10.46 . . . .9.63 . . . .8.89
0.973. . 14.3 . . . .10.31 . . . .9.50 . . . .8.76
0.959. . 14.1 . . . .10.17 . . . .9.37 . . . .8.64
0.946. . 13.9 . . . .10.02 . . . .9.23 . . . .8.52
0.932. . 13.7 . . . . 9.88 . . . . 9.10 . . . .8.40
0.918. . 13.5 . . . . 9.73 . . . . 8.97 . . . .8.27
0.905. . 13.3 . . . . 9.59 . . . . 8.84 . . . .8.15
So you can tune very similar to using gas. I am switching to E85 with the new motor and will start my tune at 11:1 and gradually lean it out until it's around 11.6:1 under WOT or anything above 5# of boost. The Buick turbo guys are pretty happy around 24-25 degrees of timing, but like above, you can get more aggressive if you know what you are doing and have good knock detection/correction.
Jim
Lamda . A/F Gas . A/F E70 . A/F E85 . A/F E100
1.027. . 15.1 . . . .10.89 . . . 10.03 . . . .9.25
1.014. . 14.9 . . . .10.74 . . . .9.90 . . . .9.13
1.000. 14.700 . . 10.600 . . .9.765 . . .9.0078 Stoichiometric
0.986. . 14.5 . . . .10.46 . . . .9.63 . . . .8.89
0.973. . 14.3 . . . .10.31 . . . .9.50 . . . .8.76
0.959. . 14.1 . . . .10.17 . . . .9.37 . . . .8.64
0.946. . 13.9 . . . .10.02 . . . .9.23 . . . .8.52
0.932. . 13.7 . . . . 9.88 . . . . 9.10 . . . .8.40
0.918. . 13.5 . . . . 9.73 . . . . 8.97 . . . .8.27
0.905. . 13.3 . . . . 9.59 . . . . 8.84 . . . .8.15
So you can tune very similar to using gas. I am switching to E85 with the new motor and will start my tune at 11:1 and gradually lean it out until it's around 11.6:1 under WOT or anything above 5# of boost. The Buick turbo guys are pretty happy around 24-25 degrees of timing, but like above, you can get more aggressive if you know what you are doing and have good knock detection/correction.
Jim
Trending Topics
I have heard some very good stuff about e85 and it's resistance to detonation. I was wanting to hear some feedback from guy's that are currently using it. I am also wondering what it is like in comparison to c16, cost not being a factor. If anyone has any experience with e85 and a stock motor that would be right up my alley. Thanks.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
We run and tune some FI cars on E85. It is not as good as c16, but pretty close to being as good as 110. I tune it like 100 oct fuel. We have a twin turbo viper here on it and it makes 1060/1145 to the tires. I run about 17 degrees of advance up top at 17psi vs. 23-24 with c16. I would only go to about 900whp on 93 oct.
Those are sad numbers for a boosted viper. Mine made 400 more rwhp at 12 psi on e85.
In my opinion e85 is great for forced induction. Just as good as c16. And if you add methanol or water injection you have a almost limitless amount of boost to run as long as you can get the fuel there.
One thing to look out for is when the weather changes like it does here in the Midwest. They change the mixture of the e85 to more petrol so it easier to start on those cold mornings. Just some thing to watch if you do make the switch.
In my opinion e85 is great for forced induction. Just as good as c16. And if you add methanol or water injection you have a almost limitless amount of boost to run as long as you can get the fuel there.
One thing to look out for is when the weather changes like it does here in the Midwest. They change the mixture of the e85 to more petrol so it easier to start on those cold mornings. Just some thing to watch if you do make the switch.
TECH Apprentice
Joined: Jul 2002
Posts: 381
Likes: 0
From: ca
So you can tune very similar to using gas. I am switching to E85 with the new motor and will start my tune at 11:1 and gradually lean it out until it's around 11.6:1 under WOT or anything above 5# of boost. The Buick turbo guys are pretty happy around 24-25 degrees of timing, but like above, you can get more aggressive if you know what you are doing and have good knock detection/correction.
Jim
you guys talk about the good parts of e-85 but your not talking about the best part.
c16 is what $5.00+ in most places
and e85 is $2.00- in most places.
^^^ that is the best about e85. 105oct gas for under $2. it doesnt get any better
c16 is what $5.00+ in most places
and e85 is $2.00- in most places.
^^^ that is the best about e85. 105oct gas for under $2. it doesnt get any better
E85 does not compare to C16! C16 is a race fuel, and you can run full timing and have some room for error.....not the case will E85....and E85 will NOT make the power that C16 can, cause the tune up has to be so safe/lame or not so aggesive to run E85 that it can really robb a lot of power from the combenation.....
Those are sad numbers for a boosted viper. Mine made 400 more rwhp at 12 psi on e85.
In my opinion e85 is great for forced induction. Just as good as c16. And if you add methanol or water injection you have a almost limitless amount of boost to run as long as you can get the fuel there.
One thing to look out for is when the weather changes like it does here in the Midwest. They change the mixture of the e85 to more petrol so it easier to start on those cold mornings. Just some thing to watch if you do make the switch.
In my opinion e85 is great for forced induction. Just as good as c16. And if you add methanol or water injection you have a almost limitless amount of boost to run as long as you can get the fuel there.
One thing to look out for is when the weather changes like it does here in the Midwest. They change the mixture of the e85 to more petrol so it easier to start on those cold mornings. Just some thing to watch if you do make the switch.
Good for you, you had a Viper that would make 800whp on the engine alone then. We were working with something that would make 450 to the tires on motor alone. No bogus numbers numbers here 2 atmospheres generally doubles hp output.
I would like to see your Viper that made 1450+ to the tires on 12psi though, must be one hell of a build.