e85 questions

[tmilliner24]

Just wondering where boosted (ess) guys get their e85. Do you trust pump fuel and if so what station/brand? Looking to move up from my 93 and know nothing about the do's and don'ts of e85. Getting ready to purchase a returnless fuel system and injectors from Wengerd.

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[EFI]

This varies greatly by location and time of year, so you should post this question in a local forum or Facebook page. The first thing you should get yourself is a tester and start sampling stations in your area to get an idea what kind of % you're really getting.

 

[AcceptableNebula]

We see E66 to E80 at pumps in Massachusetts. That’s usually enough octane unless you’re trying to cram 19 psi thru an otherwise stock Coyote.

 

[tmilliner24]

No sir, probably just stay with the 120 pulley ~ 8-10 psi. Just looking for info on the switch. I really haven't seen many cons to going e85. Wanting to make sure before I jump.

 

[GL95]

Spend an extra $500 for can bus flex and you never need to worry about it again

 

[Duece McCracken]

Just wondering where boosted (ess) guys get their e85. Do you trust pump fuel and if so what station/brand? Looking to move up from my 93 and know nothing about the do's and don'ts of e85. Getting ready to purchase a returnless fuel system and injectors from Wengerd.

Plenty of us run E85 N/A as well, lmao

Our demands on E85 are the same.

If you are tuned for E85, your tuner can tell you the min and max E content their tune will support.

Since you are using Wengerd, you could get a PCM Tech tune and add an Ethanol Content analyzer to your fuel setup. Then you can both monitor real time right after fuel up, and have a tune that'll actually adapt to the E content. A flex tune, but you'd be running "E85". It's worth discussing with them.


Or you just manually test on fill ups. Additionally you can just live in ignorance, and never actually know.

I run E85, and manually test. I do have a content analyzer kit on the shelf that I'll be installing in the early spring. Then I myself will switch to Wengerd and PCM Tech to fully ultilize it.

 

[BullittBoy]

The only real don't is don't leave E85 in system for prolonged periods of time, like over the winter for 3-4 months etc. It is not as friendly on lines and seals and stuff as pump gas is.

 

[RNM]

If you are going to be running E85 daily, be sure that you are going to be driving enough to get the oil to operating temperatures.

E85 and short distance driving (5 minutes) are a recipe for sludged engines which is why many recommend changing oil every 3k miles when running on e85.

 

[robvas]

The only real don't is don't leave E85 in system for prolonged periods of time, like over the winter for 3-4 months etc. It is not as friendly on lines and seals and stuff as pump gas is.

This is something you don't have to worry about unless your car is 20+ years old

 

[mejohn50]

Spend an extra $500 for can bus flex and you never need to worry about it again

This^2

 

[junits15]

It is not as friendly on lines and seals and stuff as pump gas is.

Just as a heads up this is not true, the lines in this car are stainless and nylon. If ethanol was a problem standard e10 gasoline would cause issues over time. The fuel system is 100% e85 compatible in stock form.

 

[tmilliner24]

Another question, once I make the switch and get the flex tune, do I just make sure the tank is empty in 93 then swap the tune and fill up with e85? Or can they be mixed? Not sure how that works.

 

[RMoeslein]

Another question, once I make the switch and get the flex tune, do I just make sure the tank is empty in 93 then swap the tune and fill up with e85? Or can they be mixed? Not sure how that works.

Palm Beach Dyno built my car including a full Fore fuel system. Their instruction are to run the car down to 15 miles left until empty, fill up with the other fuel at that point and change the tune.
If you have Speedway in your area, they always test at 85% for me, thats the only station i will go to.

 

[robvas]

Another question, once I make the switch and get the flex tune, do I just make sure the tank is empty in 93 then swap the tune and fill up with e85? Or can they be mixed? Not sure how that works.

Flex is literally anything between pump gas and e85...

 

[tmilliner24]

So is there a changing of the tune? Or does the car ecm adjust for it?

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