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DURATEC Ti-VCT Performance (2012-Current) The place to chat about any Duratec 2.0L Ti-VCT engine performance, tuning and exhaust related upgrades.

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Old 01-16-2017, 03:26 PM   #1
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Tuning for E85 and E100

Does anyone know of anyone that can help me obtain a custom tune for my 2014 Ford Focus Flex/Fuel engine for E85 and E100? I own an SCT X4 device but can't find anyone in Northern CA that can optimize my engine for mileage on E85 and E10.


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Old 01-19-2017, 08:11 AM   #2
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What mileage? It drops horribly like a rock using that for fuel.
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Old 02-01-2017, 11:13 PM   #3
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E85 does horrible for Fuel mileage.

But does it increase power stock v stock?
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Old 02-23-2017, 12:23 PM   #4
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Originally Posted by DJTrollin View Post
E85 does horrible for Fuel mileage.

But does it increase power stock v stock?
Stock vs Stock, no. But if properly tuned it should make a decent amount more power. Abysmal fuel economy but the fuel is cheaper so "somewhat" of a wash there.
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Old 02-23-2017, 12:48 PM   #5
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cheaper gas yes, can you get more power yes, better mileage no
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Old 02-23-2017, 12:57 PM   #6
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Originally Posted by ccap41 View Post
Stock vs Stock, no. But if properly tuned it should make a decent amount more power. Abysmal fuel economy but the fuel is cheaper so "somewhat" of a wash there.
Is there actually a performance benefit to be realized on an NA application? I just assume on a 2.0L na motor any increase in performance would be marginal and not worth the mpg loss/price
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Old 02-23-2017, 01:11 PM   #7
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Moved to the Duratec TiVCT Performance section.

Originally in Injected's Vendor area where it was lost/didn't fit.
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Old 02-23-2017, 02:30 PM   #8
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Quote:
Originally Posted by rambleon84 View Post
Is there actually a performance benefit to be realized on an NA application? I just assume on a 2.0L na motor any increase in performance would be marginal and not worth the mpg loss/price
There's a performance benefit to be had for sure, but how meaningful is another question. While E85 and E100 have higher effective octane ratings this allows the engine to be more liberal with timing before detonation occurs.

However, as others have said, E85 and E100 both have lower specific energy densities, which means more of it has to be burned to generate the same output.

On an NA car I would be surprised if the gains were big, but I know on Turbo cars that go to an E85 only tune the gains can be very large.

Though one thought, is the engine should make the most out of the E85 automatically, there is a sensor in the flex-fuel cars that tell it the ethanol rating of the fuel supplied. So I don't know that a tune would actually make more power. Typical "E85 tune = Power" situations are when someone takes a car designed for pump gas and tunes it for E85. Here our engines are already able to do that adjustment on their own. So I don't know that a specific tune would do any better.
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Old 02-23-2017, 02:48 PM   #9
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From what I understand in my reading, the Flex Fuel sensor for these is more of a yes/no than anything to sense percentages. It can tell when it's more than 10% so an ethanol blend vs. std. fuel, after that normal engine adjustments take over.

So yes, the car adjusts to it to a reasonable degree over time while sudden changes get a 'safe' response.
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Old 02-23-2017, 05:19 PM   #10
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e85 does not allways = more hp/tq

If you are getting drum e85 / e110 I can do your tuning but you wont see a lot of gain over what a tune and 91 will do

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