Looking At Converting My 04 Sti To Ethanol. Heard Alot Of Guys Are Doing This. Is It Worth It? Any Known Issues? Has Anyone Ran It For Some Time?

 

my friend is going to this with his evo soon he told me all that is needed is upgraded fuel pump and a new tune

 

might need new lines too, thats what I've heard

 

According To My Tuner, U Need Bigger Injectors, And A Tune. I Have 850cc. My Worries Are Corrosion!!!!

 

e85 will destroy all of the non-metal gaskets and seals in the motor. The cost of labor to replace all of those would cancel out any savings from switching to e85, and then you have a car that you can only fill up at a few places in town. Just a dumb idea.

http://answers.yahoo.com/question/in...4220001AAAwwWZ

http://www.cartalk.com/content/featu.../flexfuel.html

 

Oh, and this

http://blogs.cars.com/kickingtires/2...ving-mome.html

 

The reason for switching wouldnt be for saving money, it would be for 105 octane fuel, that is more accessible. a side effect is that it is only 2.89 a gallon. Has anyone done this? have you had any issues? I live in denver and alot of subarus have been tuned to e-85.

 

need at least 30% larger injectors and at least upgraded fuel pump. -and of course a good tune for the setup.

if you live in co, there are plenty of e-85 stations, especially colorado springs.

 

Corvette Fever magazine has been covering two C5s in Minnesota that run on E85. Both are 427 cid,11.5:1 and 12:1. They make more power on E85,and the modifications required were minimal. You can read about it at www.corvettefever.com.

 

Corvette motors are MUCH more tolerant of higher compression ratios, which is what you would have to run to get actual power out of E85.

"This is because while E85 costs less than regular gasoline, your engine doesn’t burn it as efficiently."

There is less power per gallon of E85; in order to realize the extra power you'd have to very significantly increase the amount of fuel delivered to the cylinder as well as compression (which in our case means boost.) E85 is NOT "race gas"; it also has a higher water content than gasoline. Considering that Subaru motors can go through head gaskets with just the wrong coolant mixture (I went through two head and cam gaskets in our Legacy wagon because the dealer didn't add the required "conditioner" to the coolant; luckily they realized their mistake and replaced it under warranty) I would be cautious of putting in a fuel with a known corrosion problem.

 

spoke with subaru techs. only issue he has seen is slight corrosion on the fuel pump after 3yrs of consistent use. ($95 who cares). 105 octane at 3 bucks a gallon here i come. running 347whp and 385lbs on 91. should get 400whp.

 

I also reseached and found out that E85 will destory non-metal gaskets.
I've also found that with E85 you will not get as good as MPG.
A few Subaru technicians have told me that Subaru's don't run
correctly useing E85 and they did mention that you will get corrosion
in your fuel system over time because of the higher water content
in E85. I wouldn't use E85 in my Subaru if it were free lol.

 

Just looking for someone who has done this. Got enough opinions.

 

read the e85 faq in nasioc
the RUBBER gasket thing seems to be over stated
the stock hoses are fine

but yes as a whole
30% bigger injectors (and or a fuel pressure change), a walbro and a tune

pdx tuning is doing a bunch of testing at the moment for staged AP maps

 

there's already atleast 10% ethanol in your gas already e85 is sweet...if you can get it in your area reliably.