Looks like there are only about 3 or 4 places around the DC, MD NOVA area for E-85. It says that every military base in the area has E-85, can anyone confirm that?

By the way, nice work as always David. E-85 seems a lot more economical than running race gas all the time for just about the same results as running pump gas and alcohol.

 

From what I can tell and talking to the E85 producers, in the colder states we can have as much as 30% petrol mixed with the Ethanol. When I had talked to you about doing my car with it that was my only concern with it. Going from 70% Ethanol to 85% could lean the tune out enough to change afr's.

I have yet to have anybody state when and at what content to they switch form summer to winter and vise verse.

Nice numbers, I am still pretty sure I will have you do a E85 tune for me. I was just planning on watching afrs to see if they change and work on a new map at that point. A few maps should be ok to solve most of the changover problems for winter/summer blend.

 

i did a research paper on it for school and used my car as a comparison.. it balances out...

figure this daily driving i spend 40-50$ a week on gas and about 8-12 on methanol. i go to the track once every other month and fill 110 40$ worth for a fun drive home. and twice a month i go to the local meets with 110 (40$ worth)

i know a lot of other turbo car drivers that do the same.

basically if i were to run e85 doing all of that and not have to every worry about changing maps and something breaking. i would save about 50-70$ a month if i had e85 local.

the only downfall is the fact i already fill up gas every 3rd or 4th day. i would need to go more often which is a pain stopping every 2 or 3 days for gas, i'd feel like i live there. unless some1 makes a tank for the evo that's 16 or 17 gallons. that would be nice.... and i would buy it even if i wasn't using e85

cheers!

 

You would not be able to run 70/30 E85 and then switch to 85/15 E85. I'd be afraid to tune if it was actually like that.

I am going to do some searching to see it that is true.

I was assuming this stuff today was normal E85. If this isn't and it gets even better than this stuff...............wow, it would be unbelievable.

 

So running your "double pumper" and some upgraded injectors, would be pretty much all I'd need to run this type of setup on the stock turbo (other than a flash/tune)?

What type of boost levels could a person run on the stock turbo (assuming you had supporting mods)?

Great info, thanks!

 

david-

what do you mean by flipping a switch to change the map? can you do something like that on an ems?

 

You could probably get away with a Walbro and upgraded injectors. Remember this thread is about a GT35R car hence the 1000cc injectors and duel fuel pumps.


On a stock turbo its close to the euivalent of running a race gas or pump gas/alcohol.

 

True! Thanks for the help, its much appreciated.

 

Very intersting Dave!

In April (after you've got this perfected ) I'd like to investigate an E85 tune.

Excellent work as usual.

 

Nice topic David. My only concern after reading the setup in the 1st post was that the 1000cc injectors wouldn't cut it at high boost due to the ethanol requiring about 30% more volume. I don't think I saw it posted but what AFR was the car around at 90% IDC?

Good work!

 

I'll research my area for E-85 and content percentage. I hate to say it, 1031 miles.......
but if it means more power and less weight, you know MY answer.

 

GM has a fuel composition sensor built into there FFV (part#12570260 and 12568456). Mega squirt actually has a good writeup on how to wire it to fit your vehicle. http://www.megamanual.com/flexfuel.htm

So now we dont even need to flip a switch and just pump whatever is cheaper or available, that would be a truly "turn key" operation for us EVO owners, for those that plan to take this route.

Now from what i have read and researched on my own is that all the fuel line and pumps installed on most modern cars are built to withstand alcohol baised fuels, since manufacturers have stopped using natural rubbers for fuel systems. As for worries for metal corriosion you just need stainless steel or anodized aluminum. All this information about matierials acceptable can be found by a simple google search.

The nice thing about this fuel since a few have been testing it in Vegas also is this fuel resitance to "knock". This benifit allows you to advance a bit of timing and raise the boost. Now the only bad thing i can see from this fuel is that its Anhydrous ethanol. That means its misable with water..kinda like how vodka mixes with water...but regual gas with separate right away. Now water is not bad but when burned it may form Formic acid and cause wear on internals. Im not seeing this as a huge problem as long as you dont have too much water introduced to the system.

i would go on more..but back to work for me =)

 

We need some of this junk on the west coast...

At least we will know of its down falls from ya'lls experience, by the time it gets here...

 

I'm also experiencing a renewed interest in this fuel option now. I have been thinking more and more lately that I wan't to get away from leaded fuel as much as possible, but unleaded race fuels are almost as expensive. This is certainly a much better alternative. I already tend to overbuild fuel systems, so I don't mind have to install a second pump. I already run 950 injectors as well. I need to start doing some more research..

 

On a stock turbo a set of larger injectors and a standard high pressure fuel pump would be enough to fuel the engine.

This particular car was on 1000 cc injectors running very conservative rich AFR's, using our double pumper and hit 90% duty cycles. I can for sure lean the car out from where it is which will drop the AFR's back into the high 80's.

A stock turbo could run more boost than it would be happy running on this turbo.

Keith was getting a little chicken when we tuned his car I was making comments about blowing it up and such, joking, he didn't find me funny! haha the 30 psi was easy to run on E85.

I said a flip of a switch took car of this car. I am not going into detail on how we did it. Breif description is we installed a switch so Keith can switch back and forth from normal pump gas to E85. No map changing, just flip the toggle switch.