E15 and 93 octane question

I wouldn't get caught up in the details too much unless a migraine is the desired goal LOL

Basically, the only way to KNOW what blend is REALLY in your tank is to mix your own. 

Skip to the practical part.  Since your Shell station has premixed blends, just use those to start.  Fillup when your SHO's gas tank is as low as possible, and about the same each time.  Then fill E15 to the top for first round of testing.  Run down your tank of E15.  If the datalogs are good, next fillup with E20.  And repeat this process with higher E blends until you start losing performance.  Then dial back to the next lower E blend and test it extensively.
 
SHOdded said:
I wouldn't get caught up in the details too much unless a migraine is the desired goal LOL

Basically, the only way to KNOW what blend is REALLY in your tank is to mix your own. 

Skip to the practical part.  Since your Shell station has premixed blends, just use those to start.  Fillup when your SHO's gas tank is as low as possible, and about the same each time.  Then fill E15 to the top for first round of testing.  Run down your tank of E15.  If the datalogs are good, next fillup with E20.  And repeat this process with higher E blends until you start losing performance.  Then dial back to the next lower E blend and test it extensively.
Click to expand...

My head already hurts haha. i will follow your directions, thanks!
 
ElvenSho said:
FoMoCoSHO said:
The only difference in your fuel system is the low pressure pump.

Since I've never had a gen 4.1 to play with, I don't know exactly how much that changes the corn tolerance....

So....slow and steady till Torrie gets you dialed in.

Straight gas is the better option but it takes a little more work.

Once you do it a few times, its no biggie.

Do you run Torque?

It will show you real time fuel level which helps calculate your blend on the fly.

Keep in mind, unless you are on the ragged edge of fuel volume, being perfectly exact isn't necessary as the adaptives will trim it out for you. If you are on the ragged edge and screw up during the coldest part of winter, the ECM will step in and protect itself. At least that was my experiences....
Click to expand...

So your saying straight gas is better, is it even worth me trying to do anything different than the 93 octane tune I have. I dont want to waste mine or Torries time.
Click to expand...
No, what I'm saying is 93 straight gas mixed with e-85 is better than fuel oxygenated to 93 at the refinery.

You have the luxury of a choice i don't have.

On an almost empty tank, I would add 3 gallons of e-85 then top off with the straight 93. (15% ish)

From there, each additional gallon adds approximately 5%...4 gal=20%, 5=25%, and so on.
 
FoMoCoSHO said:
ElvenSho said:
FoMoCoSHO said:
The only difference in your fuel system is the low pressure pump.

Since I've never had a gen 4.1 to play with, I don't know exactly how much that changes the corn tolerance....

So....slow and steady till Torrie gets you dialed in.

Straight gas is the better option but it takes a little more work.

Once you do it a few times, its no biggie.

Do you run Torque?

It will show you real time fuel level which helps calculate your blend on the fly.

Keep in mind, unless you are on the ragged edge of fuel volume, being perfectly exact isn't necessary as the adaptives will trim it out for you. If you are on the ragged edge and screw up during the coldest part of winter, the ECM will step in and protect itself. At least that was my experiences....
Click to expand...

So your saying straight gas is better, is it even worth me trying to do anything different than the 93 octane tune I have. I dont want to waste mine or Torries time.
Click to expand...
No, what I'm saying is 93 straight gas mixed with e-85 is better than fuel oxygenated to 93 at the refinery.

You have the luxury of a choice i don't have.

On an almost empty tank, I would add 3 gallons of e-85 then top off with the straight 93. (15% ish)

From there, each additional gallon adds approximately 5%...4 gal=20%, 5=25%, and so on.
Click to expand...

Understood. Sometimes I feel like people have to draw things for me when it comes to cars haha.
 
I would personaly just leave it alone for now until after you see your results at the track this weekend,if needed you can start focusing and preparing on exactly whats needed in the mixture,basicaly dont ruin a good thing you have. Z
 
ZSHO said:
I would personaly just leave it alone for now until after you see your results at the track this weekend,if needed you can start focusing and preparing on exactly whats needed in the mixture,basicaly dont ruin a good thing you have. Z
Click to expand...

I have a 3/4 of a tank of gas left, i will not fill up e15 until sometimes next week so this weekend i will run the car the way it sits. I might have H&R springs installed depending if the come in before the weekend tho.
 
Ok so now I have another question. The website I was provided earlier shows the ethanol % but it depends on what fuel was used to blend it can depend on what octane rating we get. For example e85 mixed with 87 is octane rating 90 while mixed with 93 is octane rating 95... I guess I got to check with the gas station if they mix e85 with 93 to get e15 or something else.
 
Honestly, I've never seen a blend pump before but I assume the octane numbers are still posted on them.

You need to know alcohol content and octane of your base fuel to use that calculator properly.

 
FoMoCoSHO said:
Honestly, I've never seen a blend pump before but I assume the octane numbers are still posted on them.

You need to know alcohol content and octane of your base fuel to use that calculator properly.
Click to expand...
Just went to the pump and spoke to the owner and got a pic of what they have. He said they blend e85 with straight gas 87 octane to get the other ratings of ethanol. So for e15 i am looking at around 90 octane or so which is worse than straight gas 93 for performance so not even worth experimenting unless i mix my own e85 and 93. Here is actually what they offer I was a bit off on some of the offerings.
ebbcb503f790043efa6ba2a307572f16.jpg


Sent from my SM-N910V using Tapatalk

 
Ok, so use the link I provided early on in this thread.  Use the calculator at the bottom of that linked page to see how much you need to mix.  Mix the requisite straight 93 and E85.  Datalog.  Done!
 
SHOdded said:
Ok, so use the link I provided early on in this thread.  Use the calculator at the bottom of that linked page to see how much you need to mix.  Mix the requisite straight 93 and E85.  Datalog.  Done!
Click to expand...
Yup only option :)

Sent from my SM-N910V using Tapatalk

 
I guess some of us are that fortunate enough to have a variety of gasoline blends that we take for granted and dont put it in good use for performance purposes while other states are limited to 91 octane and below. Z
 
ZSHO said:
FoMoCoSHO said:
Haha, glad everyone is calm now......
Click to expand...
I would love to hear the compatibility structure between the E85 and the methanol,lol.  Z
Click to expand...
If I were to do such a thing I would recommend mixing the meth with the corn first then add your base fuel. Based on on article I read it seems to mix much better in the E. I would also say it probably doesn't take much to see a noticeable difference.
 
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