Question for guys running e85

[VUDUGT350]

The low end gain is so noticeable with e85 that it pisses me off when I have 91 in because I know what it should feel like. Plus e85 is almost a dollar cheaper a gallon compared to Chevron 91 here. I could never go back. Probably will install bigger injectors once I put headers on just to be safe. Hoping this will be in tandem with a bigger throttle body too.

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[Donkey]

A tune of any kind will void your powertrain warranty.

Expect about 10hp at peak and 10-20 horsepower and torque lower in the range.

The car is able to add much more timing, much more aggressively earlier in the powerband.

The gains I've seen have been more than double that.

 

[dev1360]

The gains I've seen have been more than double that.

I'd like to see those before/after numbers. You can get to 27-28* of timing pretty easily on 93. 85 really only allows another 2* of timing up top. Nothing happening above 30* in these cars. There isn't 20-30hp happening with 2* of timing.

Lower in the range you can gain 6-7* of timing, and it'll ramp up to 30 a bit faster on 85.

 

[MARFOR]

I'm tracking step down spark plugs are needed too. Anyone do this?
The injectors or fuel pump should be alright depending on capacity, but a tune and plugs will make the most of e85 from what I'm tracking.
I would ask Ford Performance directly regarding warranty issues running e85, but I have my doubts that it will completely void it. A tune can be questionable. Again, a question to ask and not speculate on.

 

[dev1360]

You can't run E85 without a tune, so it'll have to void powertrain to run it.

No change in plugs needed.

 

[Niz55]

Smells good......

 

[KGTG350]

Injectors? Absolutely needed or okay without?

My tuner strongly recommended we change them out...so we did..

Did you add injectors after headers or at the same time? Im curious if you had any drive time with the E85, and headers and noticed anything as a result of not doing injectors?

I have a very similar set up as you minus the injectors. I have not installed my lund flex tune (Ill be running E85 99% of the time) and my LT headers and x pipe from kooks just arrived today.

Planning on having the headers installed first, then loading the tune and installing the JLT intake after I get a feel for the headers. (good advice from [MENTION=13860]65sohc[/MENTION] to add one thing at a time)

My concern: Will running my Gt350 on E85 with headers, JLT intake, lund tune WITHOUT Injectors damage the engine or any components? Whats likely to happen?

I do not have a tremendous amount of experience when it comes to injector mods and such (Im only 26 and this is my first car over 400HP :cheers and all the input from guys that have first hand experience in these areas is much appreciated!

 

[Niz55]

I belive gt350 has the same size injectors as the gt. I mean you are spending all this money just pay $200 for a set of 47lbs. Very easy to change.

 

[65sohc]

Did you add injectors after headers or at the same time? Im curious if you had any drive time with the E85, and headers and noticed anything as a result of not doing injectors?

I have a very similar set up as you minus the injectors. I have not installed my lund flex tune (Ill be running E85 99% of the time) and my LT headers and x pipe from kooks just arrived today.

Planning on having the headers installed first, then loading the tune and installing the JLT intake after I get a feel for the headers. (good advice from [MENTION=13860]65sohc[/MENTION] to add one thing at a time)

My concern: Will running my Gt350 on E85 with headers, JLT intake, lund tune WITHOUT Injectors damage the engine or any components? Whats likely to happen?

I do not have a tremendous amount of experience when it comes to injector mods and such (Im only 26 and this is my first car over 400HP :cheers and all the input from guys that have first hand experience in these areas is much appreciated!

I spoke with Lund today (via email). He said you absolutely do not need injectors with those mods and his flex tune. He said the only time you would need to upgrade injectors with his e85 tune is if you were running nitrous or a blower.

 

[VUDUGT350]

I spoke with Lund today (via email). He said you absolutely do not need injectors with those mods and his flex tune. He said the only time you would need to upgrade injectors with his e85 tune is if you were running nitrous or a blower.

So flip side for you, other than the cost (which is relatively minor) would there be a down side to upgrading injectors? I get that it may not be required but if it allows for a little more aggressive tune it's worth it to me. For what it's worth I was planning on upgrading injectors in anticipation for a bigger TB that will someday be released when I put my headers on.

 

[superman07]

yet folks like AED broke down the injector math and proved that bolt ons and e-85 could take you to the edge of the injectors flow rate, buy the injectors, run them at a safer duty cycle, don't take a chance.

 

[402]

Cold starts should not be an issue. Should start like stock.

 

[65sohc]

So flip side for you, other than the cost (which is relatively minor) would there be a down side to upgrading injectors? I get that it may not be required but if it allows for a little more aggressive tune it's worth it to me. For what it's worth I was planning on upgrading injectors in anticipation for a bigger TB that will someday be released when I put my headers on.

No downside other than needing a new tune. As far as a larger TB, I read that Ford Performance had been working on one but they found no benefit and had drivability problems so they shelved it.

 

[65sohc]

yet folks like AED broke down the injector math and proved that bolt ons and e-85 could take you to the edge of the injectors flow rate, buy the injectors, run them at a safer duty cycle, don't take a chance.

Most of AED's experience has been with complete e85 conversions in pre-S550 Mustangs. The beauty of flex fuel is you don't need to run full e85 to get the benefit. A 50:50 mix of e85 and 91 octane e10 yields 98 octane e48 which is plenty.

 

[superman07]

Most of AED's experience has been with complete e85 conversions in pre-S550 Mustangs. The beauty of flex fuel is you don't need to run full e85 to get the benefit. A 50:50 mix of e85 and 91 octane e10 yields 98 octane e48 which is plenty.

If questioned, Lund and others will recommend you empty the tank, and fill up with e85. I find the deductive logic these cars use to identify alcohol percentage to be a bit wonky. Also if your changing the percentage to much your fuel trims can effect drivability until the ecu settles.

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