well i decided to go e85 but was wondering how is it as a daily driver? any difference if any? what other pros and cons are there to e85? also all i need to do is change my injectors to 80s and retune for it?

my mods now are full cooling mods, zzp s3 he, dual pass w/ opt b. k/n typhoon cai, CA v2 header, zzp 3" dp catted, vibrant cat-back. running meth injection and spinning a 2.5" supercharger pulley. changed out my engine/trans mounts as well. no suspension mods :-(. are there any other mods that i can benefit from to run with e85? head work?

thanks for your input.

 

Only cons really are that you get a little worse mileage and it isnt as easy to start in the cold, although I never had any problems with mine starting in winter.

 

What he said. Just let your car warm up before you leave and you'll be good. There is always room for more gain with head work but its not necessary to run E.

 

Make sure you map out trips before hand because e85 is a commitment.

 

Long trips won't work with e85, you will have to switch to regular pump gas because you won't be able to find it in certain areas. You really shouldn't have any trouble with e70 in the winter, because there is still 30% gas in there but some members do. If you do just add a little more gas every now and then. Another down fall is that e70-e75-e80-e85 fuel trims are all different. You can get away with a e70 winter tune and an e85 summer tune. True e85 is only around in june/july I believe but it's all good.

If you run e85, you can get A LOT more power out of a tvs car / m62 car and no longer need methanol injection. You can still use water injection to cool an intake charge down, but methanol isn't really needed. You can also do blends to compensate for gas, run 50/50 etc and you get much better gas mileage, however it's kind of a pain and you have to get pretty low every time you fill up and it's never to exact. You would have to have half a tank of 91 and half a tank of e85 or your fuel trims would be off a lot.

Basically the only down fall is that the octane rating changes a lot, and in so your fuel trims change a lot too. This isn't a big deal if someone local to you has hptuners and can dial in your maf every now and then, I would say at least once every 6 weeks because that is when it changes. Or at least do a winter/summer e85 tune and a 91/93 traveling tune.

It would be a good idea to invest in hptuners also so you can simply just flash your traveling tune and go. That way you don't have to rely on someone who probably doesn't want to do it anyway and will charge you lol.

The only other downfall to e85 is that the fuel is DIRTY. Make sure you run a tank of 91-93 every now and then to clean out your rail/injectors. You will also need to change your fuel filter much more frequent. I would go with 3-4 times a year on e85 compared to the twice a year on 91-93 that most do it now.

With all of this being said though, e85 is a great idea and I highly recommend it.

 

I still don't know where you get all your info from. You keep calling it dirty fuel and I still don't know why. Also your fuel filter changing rate is a really stupid idea. Have you ever opened one of those up to see how dirty it is you claim??? On my eclipse I have two fuel fitters which I can take apart and replace the elements in. Neither have ever had anything in them. Ones a 10 micro filter the others a 100 micro. I have also removed the baskets out of my fuel injectors and what you know they are clean also. The octane rating from e85 - 50/50 mix of e85 and 93 does not change enough to affect how much timing and boost you can run. We did 680hp on the mix gas at 32psi so some of your info is off but you do have right info also. If you would like to show everyone where you get this dirty fuel info please feel free to share we are all here to learn.

 

people call e-85 the dirty fuel because when you first start the transition you do have to change out the fuel filter as it brings all of the sediment in the tank to to the top. Thats the only reason I can think of and ZZP also states this is a good thing to do and the reason why If I remember correctly.

 

sub'd for later use

 

True^^

I changed mine after a couple k of use and it was a lil dirty. Changed it again after another couple k of use n very clean. It doesn't need to be changed more often. You don't need a re-tune every 6 weeks. You can also run 91/93 on n e85 tune just don't boost. I have done it several times to get to the nearest e85 station.

Only downs are less gas milage if heavy foot, n not many stations. Run it. You'll be happy

 

Great info thanks guys thinking about doing it sooner than later now.. and I also mapped out several stations for the areas that I will be driving in.. closes one to my house it 4 miles away, closes one to my job is 4 miles away. And there are a few in between and some here and there for different neighborhoods in chicago..

 

e85 IS dirty fuel compared to 91-93 haha. Why do you think injectors get clogged up running straight e85 for prolonged time, why do you think it's recommended people run a tank of 91-93 *clean* gas through to clean out your injectors/lines/rail every now and then. Why do you think it's COMMON knowledge to change your fuel filter more, because e85 IS dirty haha.

Whenever you change the octane rating, you change the resistance to detonation. All of the information I posted above were facts and true and from personal experience. You say my fuel filter changing rate is a stupid idea, really? Apparently you haven't ran e85 consistently for to long. Whatever your "normal" factory fuel filter changing rate is, should be doubled when running e85.

You said quote "The octane rating from e85 - 50/50 mix of e85 and 93 does not change enough to affect how much timing and boost you can run". This is far far from the truth. Just because your car or your setup couldn't tell the difference does not mean there is not one. The higher the octane rating, the higher chance you have not to detonate. WHENEVER you lower the octane rating you are INCREASING your chance to detonate. Whether its going from 91-93 to 87-89 which is just a couple points, or whether you are going from straight e85 to a 50/50 blend. Either way, whenever you lower your resistance to detonation, you increase your chances. Just because you didn't notice anything, doesn't mean no one else will.

 

Dont be running around saying that. Bad idea. Even though it works I wouldnt recommend it to anyone. Either commit to it or dont because your fuel trims will hate you.

 

This is a terrible thread. TONS of miss-information.

 

If you read what I post and block out what other people said, the information isn't all that bad haha.

As far as driving with a e85 tune, on 91-93 gas, that is a bad idea. Your fuel trims will be way off, as will your wide open throttle. Your maf will be so far off that you won't be dialed in at all and who the hell knows what kind of afr you will have. If you were setup on e85, you should be running e85 until the tune is changed, period.

It's a good idea for people who are running e85, to have hptuners or be experienced somewhat with tuning so they can bare minimum at least swap the tunes back and forth from 91 to e85. Most people on e85, switch there tunes back to 91 or 93 at some point for a long trip etc. It's also a good idea to run at least 1 tank of 91-93 through your lines/rail/injectors every now and then to ensure they are not getting clogged etc.

 

 

OP, maybe this will help you decipher.......

Tips for converting to E85 Fuel Do

 

Thats because BlackTVS = ZachCobalt06SC.

 

I need some education on e85. From what i can tell it burns like 20% less efficient than 93 octane but looking at the forums you can create extreme horsepower gains with a tune?

 

The only "dirty" I've seen is that after a while you'll get some black goo deposit on the injectors, intake runners and on the valves. Tank or so of dino fuel and it goes away.

If your not committed to some trade off and first stop at the 7-11 to buy food then fuel, stay with 7-11 gas.

 

If for some reason you ever fill up dino fuel while your on the E85 tune for whatever reason, do NOT go WOT at all. Your car will knock like a johovas witness. Although just dont fill up with 91 and you wont have problems.

 

Yep.. you really should switch to the correct tune for correct fuel, E to gas it'll be pig rich and don't think you'll make it down the block from G to E.

 

wow lol well i got a question i was traveling from chicago to arizona and i reached this town in texas that all the regular gas stations were closed and i found one that was open only to credit cards well that gas station only had e85 i only filled it up half way and hoped for the best but umm nothing happen 200miles up ahead i found a gas station and filled it with 93octane how bad was that to run on e85 with no mods at all on an sc ??

 

It wasn't as bad of a decision compared to your epic failure of a burnout two years ago at the CED meet in the rain where you tried to get your stock car in second gear and then you tried 3rd. Then you made it 3 blocks away before the car wouldn't move on its own power.

 

i guess i needed a new clutch any ways but the car finally decided to kill it self lol after 3months of sitting in the garage untouched whiled i enjoyed my new car

 

LMAO!

To answer the question....

The car's fuel trims with "try" to fix the fueling differences from gasoline to E85. But that is a huge adjustment by the PCM and you will get even worse gas mileage. And I am surprised your car did not throw a lean code.

My general rule of thumb is...

In a pinch, A car tuned for E85 can run gasoline. But cars tuned for gasoline do not like E85...