E85 vs race fuel - Mustang Evolution

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Old 10-12-2015, 10:23 AM   #1
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E85 vs race fuel

So I want to get my car tuned and was thinking what would be better to do E85 or race fuel I'm not planning on driving around with E85 or race fuel daily just to put it in every once in a while when I take my car to the track. Also would I have to change my injectors regardless weather I do E85 or race fuel. I have a 14 5.0
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Old 10-12-2015, 10:54 AM   #2
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E85 will increase your fueling demand by about 35-40%, which depending on your mods, would require at the very least an injector upgrade and maybe a boost-a-pump / pump upgrade. E85 however, is like $2.xx a gallon.

Race fuel will not eat into your fuel overhead, and can basically be run on your car as-is, but even for 98 octane is like $10 a gallon, so there's that.
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Old 10-12-2015, 11:31 AM   #3
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"wether" not "weather".
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Old 10-12-2015, 11:39 AM   #4
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@grabber_blue5.0
Sorry my English isn't the best.
So running let's just say 100 octane with a good tune no other mods to the car how much of a power increase would I see
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Old 10-12-2015, 11:40 AM   #5
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@grabber_blue5.0
Sorry my English isn't the best.
So running let's just say 100 octane with a good tune no other mods to the car how much of a power increase would I see
100 octane on a stock car with a tune? Not worth the price of the gas if you ask me. There will be gains, but ... ehh.
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Old 10-12-2015, 11:41 AM   #6
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"wether" not "weather".
"Whether" not "wether".
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Old 10-12-2015, 11:46 AM   #7
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I see so power gains and fuel cost it's better to go with e85.
What would be the approximate cost of going e85 like price of injectors and fuel pump
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Old 10-12-2015, 11:47 AM   #8
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There are* 3 "whethers," if that's what this thread is turning into lol.
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Old 10-12-2015, 11:48 AM   #9
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@grabber_blue5.0
Sorry my English isn't the best.
So running let's just say 100 octane with a good tune no other mods to the car how much of a power increase would I see
Don't worry about it val... Grabber's English isn't so great either.

You will need to have your car tuned specifically for the race gas to see significant gains in power.
If it is a choice between E85 and race gas, I would go with the E85 and just run your car on it all of the time.
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Old 10-12-2015, 11:53 AM   #10
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There are* 3 "whethers," if that's what this thread is turning into lol.
Lol.
A "wether" is a castrated male sheep.
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Old 10-12-2015, 11:54 AM   #11
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Well is it possible to have 2 tunes loaded into the sct and have a e85 tune and a regular gas because I take my car to Seattle somewhat often and they only have like one gas station with e85
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Old 10-12-2015, 11:56 AM   #12
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So basically my question is what will make more power a stock 5.0 with e85 tuned or tuned to run 100 octane fuel
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Old 10-12-2015, 11:57 AM   #13
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Yes. It is possible to do that.
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Old 10-12-2015, 12:06 PM   #14
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Sweet I guess I'll just have to find out the cost of making my car be able to run e85
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Old 10-12-2015, 12:07 PM   #15
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Well is it possible to have 2 tunes loaded into the sct and have a e85 tune and a regular gas because I take my car to Seattle somewhat often and they only have like one gas station with e85
I think that the final numbers will be very similar, with the biggest difference between the two fuels being the cost.
The race gas is going to cost 3-4 times as much as E85.
The octane rating is about the same, but E85 has better combustion chamber cooling abilities due to the fact that you are using more of it. I would think that a good tuner might be able to squeeze a little more power out of the engine by using a more aggressive tune with E85 than with race gas.
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Old 10-12-2015, 12:21 PM   #16
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Quote:
Originally Posted by straybullitt View Post
"Whether" not "wether".
That was done purposely to see if someone was paying attention.
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There are* 3 "whethers," if that's what this thread is turning into lol.
Yep.
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Don't worry about it val... Grabber's English isn't so great either.
Oh it be damn good.
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Lol.
A "wether" is a castrated male sheep.
You must have googled that.
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Old 10-12-2015, 12:43 PM   #17
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Another thing is I heard that e85 is bad for your fuel lines or some thing like that is that true ?
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Old 10-12-2015, 12:45 PM   #18
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Another thing is I heard that e85 is bad for your fuel lines or some thing like that is that true ?
Use to be, it's not for these cars. All you need for these cars are 47lb injectors, the FRPP's will be fine, and an E85 tune.
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Old 10-12-2015, 12:47 PM   #19
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Not on late model cars. There are a lot of guys on this forum that run E85 with no problems at all.
Older vehicles can have problems though.
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Old 10-12-2015, 12:50 PM   #20
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Sweet thanks for the help
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Old 10-12-2015, 12:54 PM   #21
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Oh one other thing would I just replace the injectors and the stock fuel pumps would work with e85?
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Old 10-12-2015, 12:57 PM   #22
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The stock fuel pump is fine
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Old 10-13-2015, 12:47 PM   #23
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I'm on e85 full time for years with no issues. Just change the fuel filter to a non paper element.
If you are not blown I don't think you'll see much improvement with either fuel.
Race fuel/e85 doesnt give you any power. It allows you to make make power by advancing the timing and adding boost.
If you aren't blown you can't benifit from added boost and a couple degrees of timing wont give you enough power to make the change over worth the trouble.
But thats my opinion. I'd find a really good tuner and do whatever they tell you.
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Old 10-13-2015, 02:00 PM   #24
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There are* 3 "whethers," if that's what this thread is turning into lol.
The part of Boston where I grew up, we pronounced it, "wettar". LOL
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Old 10-13-2015, 02:03 PM   #25
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The part of Boston where I grew up, we pronounced it, "wettar". LOL
I'm from Houston, we just call it Hot.
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Old 10-13-2015, 02:21 PM   #26
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Lol.
A "wether" is a castrated male sheep.
So I am wonder whether or not a wether likes hot or cold weather.
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Old 10-13-2015, 02:46 PM   #27
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Race fuel lets you push the knock-limit back on the engine. This allows you to run higher effective compression, and keep the timing at the point of "Maximum Brake Torque" without knocking/detonating/preigniting.


I do not think you need race fuel to set your timing to the point of Maximum Brake Torque. I could be wrong, but I don't think the knock limit for a stock engine is inhibitive on that level. Even if you cannot get the timing to MBT, you will be close. The extra fuel and tune would not be worth it unless you're racing for money.


There are actually some octane boosters that work. You have to shop carefully, but fuel additives can indeed raise the stability of the fuel. Lead, for example, is quite an effective additive for raising the octane.
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Old 10-13-2015, 02:54 PM   #28
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So I am wonder whether or not a wether likes hot or cold weather.
A wether probably doesn't care whether the weather is hot or cold... They are just pissed off about having been castrated!
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Old 10-13-2015, 07:51 PM   #29
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A wether probably doesn't care whether the weather is hot or cold... They are just pissed off about having been castrated!
I think they're too busy over there to wonder whether or not two wethers are enjoying their weather.

Drops mic, walks off stage.
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Old 10-13-2015, 07:54 PM   #30
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Does whether they're a wether impact their ability to enjoy the weather there?

I don't care if you're not supposed to end a sentence in a preposition lol: *Drops mike, walks off stage*
Lol that was good
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Old 10-13-2015, 07:57 PM   #31
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Lol that was good
unquote that ish, i took it one step further. Night school is boring lol.
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Old 11-18-2015, 04:14 PM   #32
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Is the extra money for the upgraded injectors, etc and tune worth the money for the few extra ponies you would get on a stock 5.0?
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Old 11-18-2015, 04:21 PM   #33
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Is the extra money for the upgraded injectors, etc and tune worth the money for the few extra ponies you would get on a stock 5.0?
Unless you are boosted, I'd say no.
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Old 11-18-2015, 04:58 PM   #34
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Unless you are boosted, I'd say no.
Agreed. I have an appt at AED this weekend for an E85 tune
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Old 11-18-2015, 05:25 PM   #35
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"Whether" not "wether".
Rekt

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