Id tune for 93 (what I do)

 

E85 when tuned right acts as race gas... But you will need to change a lot of your fuel delivery for it... You will also get noticeably worse mpg with E85. (And you will also be supporting the increasing debt of the government through corn subsidies).

 

This from a unemployed college student? If your so GREEN, why aren't you riding a bicycle and saving the environment?:doh:

 

This has been beat to death at least 746^100 times, but all I'm going to say is e85 is better. I wrote books in the other threads. Maybe someone will post links to them but I'm lazy lol

 

I know man I read many threads on e85 but not comparing both, one thread only...I would have to get an sct, injectors and dyno tune so idk if 800 bucks is worth it

---------- Post added at 12:31 AM ---------- Previous post was at 12:30 AM ----------

I know man I read many threads on e85 but not comparing both, one thread only...I would have to get an sct, injectors and dyno tune so idk if 800 bucks is worth it

Which 47lb injectors do I need? Long or medium?

 

If you are NA you might as well stick with 93 octane, but if you go FI then it would be smart to switch over.

 

E85 eats up a lot of things and drys stuff out..hard on a motor.. No bad for it just hard on it

 

Show me proof of that!

I've changed my oil routinely every 4000k on my lightning that uses E85 only, and the oil comes out looking brand new! Sure, I get 12mpg on the highway but I'm also making almost 600rwhp. So I spend $2/gallon or less for what is technically race gas that gives me zero detonation and a noticeable 20+HP at the wheels. And that's just from switching over.

Ozzy, these coyote motors are high compression. High compression motors are way more susceptive to detonation than low compression and they also make a good use of engine timing and cam timing. This is why we can go from non-tuned to tuned and get a noticeable HP increase. The more you wind up the motor the greater chance you have of starving it for fuel. When that happens, or when you get a ****ty batch of 93 octane you will get detonation and it will hurt your engine. Now, the average BAMA 93 octane tune is not what I'm talking about. I'm talking about kill/race tunes that are aggressive and make the most out of whatever fuel you are running. At a NA level, it's imperative that you use good fuel when maximizing a set-up. Equally as much as if you were FI. So don't go off of people who don't use e85, because they are probably giving some spill they read off the Internet. I use e85...have used e85...will use e85. Atleast until race gas is just as cheap lol.

Having said all of that, get a 93 octane tune for daily duty and a e85 tune for the track.. And thank me later. Is it worth it? How much does a new engine cost? All you need is injectors an I would get injector dynamics. Here I go writing books again... Lol

 

The E85 fuel around here (East central Indiana, West central Ohio) is too inconsistent.

When I ran E85 in my race quad, I was constantly changing the jetting every time I bought new fuel. As the mix was always different every week. Also, it used about 35% more fuel when on E85 vs race gas. I also had to drain the carb every time I rode it because if I let it sit for more than a day, the jet would get clogged.

I know several people with high horse power cars (up to 1250 awhp) that run E85 but they stick to only one station ( Southport Road, Meijer in Indianapolis ) and only during certain months (late spring, summer and early fall) as their E85 is very consistent on the summer blend and they have all new tanks, etc..

I have heard horror stories from some of these guys who purchased E85 elsewhere and had several issues with getting their cars running properly (water in the fuel from crappy tanks, E70 instead of E85, etc). To the point that most of them just drained their tanks and purchased fuel from their usual location.

I would ask the local hot rodders in your area about E85. It's a great fuel for making power but you need to make sure you are getting a good consistent blend. I don't have access to any decent E85 stations even though I live 3 miles from an ethanol plant. The one I mentioned in Indianapolis is over 100 miles away, so not exactly local.

 

As mentioned above your looking at 15-20 whp give or take, really not worth it on NA cars IMO, boosted cars see MASSIVE gains, your better off getting a race gas tune.

 

Another thing is even on 10-15% ethanol, you can't leave a motor laid up for a long time with that in it. Look up how frustrated the boating industry is with the increased ethanol in fuel. 85% ethanol will chew through the fuel system QT if left to sit.

Frankly, you'd be asking for more trouble than you've already found, for very little gain.

 

Until I started frequenting this forum several months back I had never even heard of E85 but was always wondering what exactly Flex-fuel cars were all about. I have never seen it here in north Texas. After reading this thread my curiosity was piqued and I did a little research on ethanol. I have a 93 tune on both my V6 and 5.0 and only burn 93 octane Exxon or Shell gas. I paid $3.46/gal for it this morning. What do those of you who run E85 pay for it?

 

Keep in mind if you use E85, even if it is cheaper, you're going to use at least 1/3 more fuel because of the lower energy of alcohol. Calculate that into it + the cost of conversion and the potential reliability issues long-term.

...and quit yer cryin'. 93 octane where I am is near 6 bucks a US gallon.

 

Keep in mind if you use E85, even if it is cheaper, you're going to use at least 1/3 more fuel because of the lower energy of alcohol. Calculate that into it + the cost of conversion and the potential reliability issues long-term. ...and quit yer cryin'. 93 octane where I am is near 6 bucks a US gallon.

6 a gallon for 93?$)$ HOLY %^+%! I thought I had it bad in S FL with 3.80ish lol but damn.

 

I paid $2.03 a gallon for e85 today. 20 gallons for a little over $40. I get my e85 from shell exclusively and that is because it's been proven to maintain high fuel quality with the e85 I have gotten. My lightning gets driven just about every Friday but sits all week and even as much as a couple weeks when it rains but I have never had any issues with starting,pinging, stuttering, or water in fuel. Then again, I live in south Texas, and it's hot... Even in late December it's hot here. Bearing in mind I have a somewhat complete fuel system re-vamp, I'd say it does pretty good. My 20 gallon tank will get me about 215-250 miles depending on how I drive the truck. On weekends at the track I can use a half tank in a few passes lol.

This is from last weekend spinning the tires through 3rd gear -_-

 

I avoid putting ethanol in my car. I even have an app that tells me where to get ethanol free gas when I'm on the road. This is why: http://www.popularmechanics.com/_mobile/cars/alternative-fuel/biofuels/e15-gasoline-damage-engine

 

I avoid using ethanol as much as I can. I even have an app for that. This explains why:http://www.popularmechanics.com/_mobile/cars/alternative-fuel/biofuels/e15-gasoline-damage-engine

 

Sorry for repeat. I thought first one didn't post. I'm new