What's the best way to figure your mixture after initially mixing? Say you're setup to run 5 gallons of e85 and 14 of 93 octane. How exactly can you maintain consistency of that combination? Does e85 burn equal to say 93?
You have Email...
E-20 was easy and the fueling was great but E-30 38 has been a little challenging getting the stoich setting dialed in.
http://www.intercepteft.com/calc.html (http://www.intercepteft.com/calc.html)
I'd shoot for the rich end of the worst case scenario, I'd rather the ECU need to pull than add.
Thanks man! You definitely bring up a good point about running a tad rich over too aggressive with the mix. I hear e30 is all the car will take before running out of fuel with the stock system
Quote from: J_C on August 24, 2016, 06:49:36 PM
Thanks man! You definitely bring up a good point about running a tad rich over too aggressive with the mix. I hear e30 is all the car will take before running out of fuel with the stock system
I'm sitting at E38 ish with good pressure.
When I say rich, it is not rich per se as the car is targeting a lambda of 1 at part throttle and whatever you set at WOT. (I'm at .85)
Look at LTFT as your broad fuel adjustment and STFT as a fine tuning adjustment. There is a time component and the car is always learning but if you are too far out of whack on your target you can overshoot and undershoot your targets. I had the E20 tune consistently around 0 at cruise and idle. (+-1.6 LTFT and STFT both banks) The bigger your trim differences are the more chance there is to miss your targets and I like seeing commanded match target throughout my WOT pulls. I'd personally rather overshoot than undershoot and go lean. No fear though, corn is excellent at suppressing knock.
i like seeing more people mess with E. good luck on your endeavors.
once it starts cooling off, I'm going to go back to revising my E20 tune with Torrie before the track closes down in October. I want that damn 12 and hopefully there will be good air and get me to mid 12's!
Quote from: 92BlackGT on August 25, 2016, 02:37:43 AM
i like seeing more people mess with E. good luck on your endeavors.
once it starts cooling off, I'm going to go back to revising my E20 tune with Torrie before the track closes down in October. I want that damn 12 and hopefully there will be good air and get me to mid 12's!
How many revisions did it take with Torrie to get e20 dialed in? Mid 12's are also my goal come fall with cool weather. My best is a 12.82 @107 on a 90+ degree day with high humidity with DA hovering around 2800'. That was with 93 octane but I'm definitely considering adding e85
Quote from: J_C on August 25, 2016, 11:58:31 AM
How many revisions did it take with Torrie to get e20 dialed in? Mid 12's are also my goal come fall with cool weather. My best is a 12.82 @107 on a 90+ degree day with high humidity with DA hovering around 2800'. That was with 93 octane but I'm definitely considering adding e85
I've only had 3 revisions on my E20 tune. there is definitely more in it with more work with Torrie
Quote from: FoMoCoSHO on August 24, 2016, 06:19:05 PM
http://www.intercepteft.com/calc.html (http://www.intercepteft.com/calc.html)
it appears intercepts calculator isn't there anymore!? major bummer it was my bible for the Eblends. anyone know if it can be found elsewhere or have another calculator they've had good experience with?
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Quote from: Colorado-SHOBro on February 26, 2017, 04:32:16 PM
Quote from: FoMoCoSHO on August 24, 2016, 06:19:05 PM
http://www.intercepteft.com/calc.html (http://www.intercepteft.com/calc.html)
it appears intercepts calculator isn't there anymore!? major bummer it was my bible for the Eblends. anyone know if it can be found elsewhere or have another calculator they've had good experience with?
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Fomo found a great one...I have it too..I'll try and send it to you...It even accounts for what's in the tank too
Scratch that, we may be talking about the same one?
Quote from: AJP turbo on February 26, 2017, 04:47:07 PM
Quote from: Colorado-SHOBro on February 26, 2017, 04:32:16 PM
Quote from: FoMoCoSHO on August 24, 2016, 06:19:05 PM
http://www.intercepteft.com/calc.html (http://www.intercepteft.com/calc.html)
it appears intercepts calculator isn't there anymore!? major bummer it was my bible for the Eblends. anyone know if it can be found elsewhere or have another calculator they've had good experience with?
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Fomo found a great one...I have it too..I'll try and send it to you...It even accounts for what's in the tank too
Scratch that, we may be talking about the same one?
i think we are referring to the same one. it was great- had the check boxes for full tank or not and calculated octane rating of the blend at the bottom of the page? hope someone can recover it
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Quote from: Colorado-SHOBro on February 26, 2017, 04:32:16 PM
Quote from: FoMoCoSHO on August 24, 2016, 06:19:05 PM
http://www.intercepteft.com/calc.html (http://www.intercepteft.com/calc.html)
it appears intercepts calculator isn't there anymore!? major bummer it was my bible for the Eblends. anyone know if it can be found elsewhere or have another calculator they've had good experience with?
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http://ethanolpro.tripod.com/id213.html (http://ethanolpro.tripod.com/id213.html) Z
negative. ^ that gives me error code 404
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Take off the period...
http://ethanolpro.tripod.com/id213.html (http://ethanolpro.tripod.com/id213.html)
Quote from: hawkeye93 on February 26, 2017, 08:20:18 PM
Take off the period...
http://ethanolpro.tripod.com/id213.html (http://ethanolpro.tripod.com/id213.html)
If anyone is interested in a sweet blend calculator PM me your email addy.
Does it still work?
Quote from: FoMoCoSHO on August 24, 2016, 06:19:05 PM
http://www.intercepteft.com/calc.html (http://www.intercepteft.com/calc.html)
Since that site is down now, I have been searching for another way to calculate. found a couple online calculation sites, this one seemed nicest. limitation though is that it is whole gallons only, not decimals.
http://www.georgebelton.com/E85Calculator.php (http://www.georgebelton.com/E85Calculator.php)
This one lets you use decimals, but it clears out the data you entered every time you calculate, so you have to remember it and reenter gallons every time.
http://www.wallaceracing.com/ethanol-mix-calc.php (http://www.wallaceracing.com/ethanol-mix-calc.php)
I need to learn to make apps ;)
here is the spreadsheet i built based on the wallace racing results.
whoops.. broke it. brb.
Fixed.
converting to CSV removed the formulas :P .. zipped up the XLS instead.
Lamrith, did you get my email?
Quote from: FoMoCoSHO on May 12, 2017, 11:48:48 AM
Lamrith, did you get my email?
Yup, thanks!! I replied, did it not get back to you?
Yeah, I finally got it.
Or maybe I just didn't have enough coffee and missed it initially?
So here is a question for the nerds among us... Both the calculator spreadsheets work great as does the link above.
What I wonder is if anyone can figure out (or already has) a formula that will tell you the amount of each fuel to use to make a certain blend at a certain total gallons?
So I have:
92 Octane E10
100octan E85
I want to make a total of 16gallons of E30, how much of each.... (This one is easy and I know answer already, but would like to be able to quick calc on the fly based on total gallons.
We can do it by manually adjusting the gallons in each cell, but there has to be a formula that will spit out the numbers? Probably two formulas, but that could both reference a single total gallons cell.
Well I just did some rough playing around with the spreadsheets. Since we are normally looking at a fixed end mix and gallons, I broke it down to ratios of the total.
For 16Gallons of E30, you need 4gal of E85 and 11gal of E10. So when mixing E10 and E85, to get E30 you need 26.6666667% of the total gallons to be E85 and the rest is E10.
- So for 7.5gal of E30 it is: 7.5*0.266666667=2gallons of E85. 7.5gal-2gal=5.5gal of E10
To make E20 based on the same total of 15gal it takes 2 Gal of E85 and 13gal of E10. So the ratio of E85 is 13.3333333477778% of the total volume.
- So for 7.5gal of E20 it is: 7.5*0.133333333477778=1gallons of E85. 7.5gal-1gal=6.5gal of E10
This is far from perfect way to do it. If you do not have E85 that is actually 85% (falling short and is actually 83, etc) then this will not be correct. That is why I was hoping someone could work up a formula to do it on the fly to account for variances.
I used the spreadsheet fomocosho gave me, got an ethanol tester to check my e85. I made up 2 cheat sheets. One for 70% one for 75%. I normally fill up when my light comes on, 5.25 gallons e85 9.75 gallons e85 to equal 16 gallons. But I have the mixtures all figured out all the way to just adding 5 gallons of total fuel. I just keep these sheets in my car laminated.
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I use the "E85 Mix Calculator" app on my (Android) phone, works great. From Kenny Nissel.
Quote from: f8tlSHO on May 13, 2017, 07:09:58 AM
I used the spreadsheet fomocosho gave me, got an ethanol tester to check my e85. I made up 2 cheat sheets. One for 70% one for 75%. I normally fill up when my light comes on, 5.25 gallons e85 9.75 gallons e85 to equal 16 gallons. But I have the mixtures all figured out all the way to just adding 5 gallons of total fuel. I just keep these sheets in my car laminated.
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Yeah I am tinkering with those sheets too. So by 70 and 75% do you mean E25 and E30, or are you saying that the E85 you are seeing is only 70 and 75%?
Quote from: lamrith on May 13, 2017, 10:53:33 AM
Quote from: f8tlSHO on May 13, 2017, 07:09:58 AM
I used the spreadsheet fomocosho gave me, got an ethanol tester to check my e85. I made up 2 cheat sheets. One for 70% one for 75%. I normally fill up when my light comes on, 5.25 gallons e85 9.75 gallons e85 to equal 16 gallons. But I have the mixtures all figured out all the way to just adding 5 gallons of total fuel. I just keep these sheets in my car laminated.
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Yeah I am tinkering with those sheets too. So by 70 and 75% do you mean E25 and E30, or are you saying that the E85 you are seeing is only 70 and 75%?
E85 percent, I run e30
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Quote from: f8tlSHO on May 13, 2017, 10:56:20 AM
Quote from: lamrith on May 13, 2017, 10:53:33 AM
Quote from: f8tlSHO on May 13, 2017, 07:09:58 AM
I used the spreadsheet fomocosho gave me, got an ethanol tester to check my e85. I made up 2 cheat sheets. One for 70% one for 75%. I normally fill up when my light comes on, 5.25 gallons e85 9.75 gallons e85 to equal 16 gallons. But I have the mixtures all figured out all the way to just adding 5 gallons of total fuel. I just keep these sheets in my car laminated.
Sent from my iPhone using Tapatalk
Yeah I am tinkering with those sheets too. So by 70 and 75% do you mean E25 and E30, or are you saying that the E85 you are seeing is only 70 and 75%?
E85 percent, I run e30
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Sorry to bug you on this, just digging into it again as I consider running E30 this summer. Your comment about 70% and 75% are what are throwing me off is all.
5.25gal E85 and 9.75gal E10 would net you 16gal of E36, not E30?
Is that what you do when you convert from E10 to E30 given there are 4 Gal of E10 still in the tank so you end up with a total of 19gal of E30?
The e85 isn't 85% it's 70% in winter and 75% in summer.
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Quote from: lamrith on May 17, 2017, 06:16:44 PM
Quote from: f8tlSHO on May 13, 2017, 10:56:20 AM
Quote from: lamrith on May 13, 2017, 10:53:33 AM
Quote from: f8tlSHO on May 13, 2017, 07:09:58 AM
I used the spreadsheet fomocosho gave me, got an ethanol tester to check my e85. I made up 2 cheat sheets. One for 70% one for 75%. I normally fill up when my light comes on, 5.25 gallons e85 9.75 gallons e85 to equal 16 gallons. But I have the mixtures all figured out all the way to just adding 5 gallons of total fuel. I just keep these sheets in my car laminated.
Sent from my iPhone using Tapatalk
Yeah I am tinkering with those sheets too. So by 70 and 75% do you mean E25 and E30, or are you saying that the E85 you are seeing is only 70 and 75%?
E85 percent, I run e30
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Sorry to bug you on this, just digging into it again as I consider running E30 this summer. Your comment about 70% and 75% are what are throwing me off is all.
5.25gal E85 and 9.75gal E10 would net you 16gal of E36, not E30?
Is that what you do when you convert from E10 to E30 given there are 4 Gal of E10 still in the tank so you end up with a total of 19gal of E30?
(https://uploads.tapatalk-cdn.com/20170518/79be0c75b1a23424377d1d9e1da6b5c7.jpg)(https://uploads.tapatalk-cdn.com/20170518/008247b7a0f6d153f56f8bfd0dee9acb.jpg)
Here are my 2 cheat sheets
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