Visconti Tuning - Who wants to run on e85? or 100 Octane

[Unleashed]

Originally Posted by vubaru

Putting E-85 in recent Subarus doesn't appear to cause any ill effects, and I have put a little less than 30k on my old Impreza after running it on an E85/pump gas mix.

I don't recall the percentages off-hand but there was quite a bit of testing done by NASIOC members using the stock tune on the old NASIOC 2.5 RS subforum. I believe the mix was something on the order of 50/50, but I could be off. After running the corn/pump gas mix, I looked at the fuel lines and hardware when replacing the fuel filter during routine maintenance and didn't see any visible deterioration of anything. No clogging of the filter that I could see. Edit: Injectors were also fine. Etc..

I had only about maybe 4k miles on the mix out of the 45k or so that I had on the RS, but during and after the time I put E85 in the car, I only saw positive effects. I haven't ran E-85 on the BRZ yet, but 100 octane beats the piss out of CA 91.

And since Visconti has more seat time/tuning experience with the BRZ/FR-S than most anyone else I can think of, if he says E-85 is looking to be copasetic with the FA20, that's more than good enough for me.

I agree. Just always cautious, especially with first year production. I dont make enough money to have to pay out of pocket for everything if i void a warranty haha. Trying to do things that could be hidden

[vubaru]

Originally Posted by Unleashed

I agree. Just always cautious, especially with first year production. I dont make enough money to have to pay out of pocket for everything if i void a warranty haha. Trying to do things that could be hidden

as to all of the above. Nothing more hidden than a flash. Counting down the hours until I get mine! Also, can't wait to see the new maps and dynos of 100 or 96 octane..

[Unleashed]

This forum and all it talks about is the reason why I bought this car. I love being on the forefront of tuning and parts!

[Allch Chcar]

I'm very impressed at your results but I'm sitting here looking at the dynograph wondering how you extracted so much from it. Usually I expect a 3-5% gain over 93 AKI Gasoline, which would be plenty enough for me. Though we lost the only E85 pump in my town, I'm usually never more than 20 miles from an E85 pump out here.

I'm not committing to anything mind you, not yet, but when/if I get my car I'll be putting you on my list.

[Sargy]

Loving the Recent Dyno Sheet. Entered 8th gen SI territory.

[whitefrs]

are we talking on E85 on a N/A FRS/BRZ?
Will the engine last on e85?
what are the cons and pros?

[Matt Andrews]

sorry if I've missed this, but does your flash have the ability to toggle between fuel/ timing maps for different octanes? Or are you "stuck" with which ever one you select? I can't imagine it uses a flex fuel sensor does it?

[Visconti]

Originally Posted by Matt Andrews

sorry if I've missed this, but does your flash have the ability to toggle between fuel/ timing maps for different octanes? Or are you "stuck" with which ever one you select? I can't imagine it uses a flex fuel sensor does it?

Flex fuel shortly.

Will have 4maps on the fly

John

[Matt Andrews]

excuse the ignorant question - but what about a "mix" fuel table? If you fill up with e85 when you have a quarter tank of 91. Will there be accountability for that? or is it an either/or decision for the ecu?

[Visconti]

Originally Posted by Matt Andrews

excuse the ignorant question - but what about a "mix" fuel table? If you fill up with e85 when you have a quarter tank of 91. Will there be accountability for that? or is it an either/or decision for the ecu?

We call that flex fuel..

[clayrush]

Originally Posted by vubaru

Clayrush, you're in Vallejo, right? You can go to the Sunol Super Station down I-680, too, they have good prices on E-85, 94, 96, 98, and 100. I guess you may be closer to the track, though

yeah that's to far for me. the car is going to be a daily driver, so i need more options for places to gas up

[brichard0625]

found a station 6 mins away with e85 it was 3.57...Im Ready!

[Z06tofrs]

Originally Posted by Visconti

Hey guys

Working on a few different things right now.

One of those things is e85 & 100 octane tunes for the BRZ/FRS.

Just wanted to get a idea of how many of you guys would want this.

Thanks

John

Just an FYI I know nothing in this tuner world. I drove stock vettes the last decade. My last being a 2007 z06 so please bare with my ignorance to this strange yet interesting new world of small displacement vehicles. That said...

Count me in on e85. I just checked the website. Then drove out to the actual station to make sure they had the fuel, and they do! Yay. Said 104 octane@ $3.41 per gallon that's .22 less than 87, and .58$ less than 93. All I need to know is what is needed for this fuel if anything.

I already gave my 50$ for the group buy on that ecu flash stg1, ordered a perrin pulley and am currently looking on a full blown exhaust. Living in Florida there are no emissions to worry about. So if cats need to come off no problem. Also debating on the turbo option with e85.

[sw20kosh]

Originally Posted by Z06tofrs

Just an FYI I know nothing in this tuner world. I drove stock vettes the last decade. My last being a 2007 z06 so please bare with my ignorance to this strange yet interesting new world of small displacement vehicles. That said...

Count me in on e85. I just checked the website. Then drove out to the actual station to make sure they had the fuel, and they do! Yay. Said 104 octane@ $3.41 per gallon that's .22 less than 87, and .58$ less than 93. All I need to know is what is needed for this fuel if anything.

I already gave my 50$ for the group buy on that ecu flash stg1, ordered a perrin pulley and am currently looking on a full blown exhaust. Living in Florida there are no emissions to worry about. So if cats need to come off no problem. Also debating on the turbo option with e85.

I believe E85, while cheaper, is less energy dense than regular gas. Therefore your engine needs 30-40% more E85 to get the same mileage. Your MPG will take a 30-40% hit so in the end E85 may be more expensive.

Your fuel pump and injectors will need to work 30-40% harder and thus you will hit the limitations of the fuel system sooner.

Please correct me if I am wrong.