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post #1 of 23 (permalink) Old 05-14-2015, 01:59 PM Thread Starter
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Zero Ethanol Gasoline in Our Engines

So the state of hawaii is looking at getting rid of ethanol in our gasoline completely. Its nothing set in stone yet, but it seems to have a decent chance of happening. So my question is: Will this affect my engine and/or performance in any way? Most of you know me and my ride, but those that don't I am a 2.2L trifecta tuned 2008 LT. We only have E10 in hawaii so it's not like I'm going from E85 to straight gasoline, but I still want to be sure.

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post #2 of 23 (permalink) Old 05-14-2015, 02:23 PM
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Yeah, it'll make it run better and probably get better mpg


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post #3 of 23 (permalink) Old 05-14-2015, 02:25 PM Thread Starter
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That works for me!

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post #4 of 23 (permalink) Old 05-14-2015, 02:33 PM
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Ethanol is crap, I'm glad your state realises it!

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post #5 of 23 (permalink) Old 05-14-2015, 03:39 PM
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Quote:
Originally Posted by agita_san View Post
So the state of hawaii is looking at getting rid of ethanol in our gasoline completely. Its nothing set in stone yet, but it seems to have a decent chance of happening. So my question is: Will this affect my engine and/or performance in any way? Most of you know me and my ride, but those that don't I am a 2.2L trifecta tuned 2008 LT. We only have E10 in hawaii so it's not like I'm going from E85 to straight gasoline, but I still want to be sure.
You're so lucky lol, I hate that crap in our gas.

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post #6 of 23 (permalink) Old 05-14-2015, 06:53 PM
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Do you need to get retuned for that?

I think they cut our gas with a 10-15% mixture of Eazy-E(thanol)

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post #7 of 23 (permalink) Old 05-14-2015, 07:42 PM
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Likely, yes.

When we were doing the tuning on one of my fraternity brother's vehicles - an '88 Mustang GT, running E85, the ramp up from winter to summer blend was enough to require us to modify the tune each time he filled up, until it settled in.

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post #8 of 23 (permalink) Old 05-14-2015, 09:03 PM
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By federal regulations gasoline can only be cut to a final mixture of 10% ethanol
as this was the maximum in which car manufactures would warrant gas wise.
Ethanol mixed gas provides approx 20% less efficiency, (Power) vs using regular gas.

Locally Tennessee Pumps have the Mixed 87, 89 and 93 and there is a 4th here which is 100% 87 and a 5th which is E85.
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post #9 of 23 (permalink) Old 05-14-2015, 09:09 PM
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Isn't the octane rating of ethanol much higher, and therefore better suited to an engine tuned for it? I understand it being a waste in cars that typically run on regular, but there are advantages, no?

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post #10 of 23 (permalink) Old 05-15-2015, 06:18 AM
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Yes, which is why E85 is right about 105 octane. But the heating value is lower, so fuel economy decreases - but the charge is also a bit cooler, so you get lower NOx emissions.

However, if you tune the car, you can advance the timing to take advantage of the extra octane, making the engine more efficient in the process, allowing you to gain some of that fuel economy back, while making more power at the same time.

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