E85 consistency question.

[mnmike59]

I wanted to get as much torque and HP out of my GT PP N/A as possible. My Tuner said absolutely NO to running E85. My thought has been its cheap HP, Why Not?
His response was because you cannot get consistent amounts at any stations, and buying bulk doesn't make sense due to the shelf life.
My question is, for the guys running E85, how do you know what your getting?

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[3beeps]

Your tuner is wrong. :\

Get a Lund flex fuel tune. That way you can run 91, 93, E85, or a mix of them.

The nGauge will tell you the ethanol percentage after you fill up and will adjust the tune accordingly.

 

[09jsw]

I wanted to get as much torque and HP out of my GT PP N/A as possible. My Tuner said absolutely NO to running E85. My thought has been its cheap HP, Why Not?
His response was because you cannot get consistent amounts at any stations, and buying bulk doesn't make sense due to the shelf life.
My question is, for the guys running E85, how do you know what your getting?

People that have an e85 only tune test it. It's very simple. Get a flex tune if you don't want to test it every once in a while.

 

[GuardGT]

i test my e85 at the local pump here in cali. its tested e90 every single time, which is pretty standard here. for these cars, just get a flex fuel tune, problem solved. you actually never NEED to test the fuel with a flex tune.
the only issue i see with your tuner being opposed to e85 is the stock injector dilemma, which is solved for relatively cheap with new injectors. if thats not his issue, then maybe consider a new tuner because e85 is very common and makes pretty solid gains on the coyotes.

you can use this tester
https://www.summitracing.com/parts/..._-quick-fuel&gclid=CPvoqrOvvNECFc6Xfgod4PgJzA

 

[Coyote Red]

47# to 52 # injector's will work I believe, I don't have E85 on the coastal bend where I live.

 

[venumous]

Unless something has changed you don't need injectors. Lund Flex Tune and done.

 

[isedawishy]

I run only E85 and typically get it from the same station by my house. I test it occasionally is all...

I'd be even less worried if I was N/A

 

[wireeater]

Get a flex tune, problem solved. I have put at least 8 tanks of E85 in since having my flex tune and have never once tested it. I get it from Sheetz which claims anywhere between 53%-81%, and SUNOCO which claims 83%. That's the beauty of the flex tune.

A stick E85 tune, yes. You shouldn't be running a strictly E85 during winter times if your state gets winter blends IMO. E85 tune should be a track/street race tune only that you load when you need it. Considering you are running a tune for E85 only then it's expecting to be close in that range. I would probably say anything in the upper 78%-83% content should be fine.

 

[Terminator2]

Unless something has changed you don't need injectors. Lund Flex Tune and done.

Stock injectors max out on E-85 at around 45lbs/min at 0.85 lambda so LU47s are a very good idea to add for peace of mind as many na cars are close to that airflow amount with just a few bolt ons.

 

[bluebeastsrt]

Unless you have a lot of bolt ons. Something like a cobra jet intake & throttle body you don't need injectors. A flex tune is fine for the average bolt on car.

 

[HISSMAN]

Your tuner...find a new one.

 

[pwnall1337]

your tuner is not wrong. typically e85 is consistent, however ive seen here in satx very rarely its e50. sometimes underground tanks can soak moisture and degrade fuel quality. flex is safest way to go but e85 only tunes are safe for most part.

 

[Phoenix]

I wanted to get as much torque and HP out of my GT PP N/A as possible. My Tuner said absolutely NO to running E85. My thought has been its cheap HP, Why Not?
His response was because you cannot get consistent amounts at any stations, and buying bulk doesn't make sense due to the shelf life.
My question is, for the guys running E85, how do you know what your getting?

you need to find a new tuner. go lund. seriously. throw some bigger injectors in it and get a flex fuel tune.

 

[Jn2]

Lu47's+Flex fuel log being enabled will get you ready to rock regardless of how inconsistent the the ethanol percentage is.

If you go with a strict e85 tune your fuel trims will correct for some of the inconstancies in percentage but if you run a aggressive spark map it could cause issues...

I usually tune so KR is adding 2*, this give it a safe buffer should you run into lower percentage or warmer summer temps...Also, increasing the KR down ramp will help the ECM pull timing faster should you run into some very low e50-e60 blends. Best thing to do is check with your local car groups and find out who has the most constant mix of e...locally I have about 3 stations that have consistent e85, and 1 that hovers as low as e60 at times.

 

[dev1360]

In most normal N/A applications, you'll get full timing around E40-50 anyway. So consistency isn't an issue.

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