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Old 06-10-2013, 01:07 AM   #1
lmitchell255
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Default 2012 STI E85 or 93

Ive got a 2012 pearl white STI Sedan. Its got a K&N intake, Agency power catless dp, and invidia cat back. Im tuned by precision violence, and currently running on 93. (im wanting to do the walbro 255 and 1000cc injectors most likely)

I love my car to death and am constantly worried about anything going wrong, but at the same time i want more power, just like the rest of us . Would E85 be a good choice for me is my big question. Obviously ive searched and read and read and read all over the forums about E85 but i wanted to ask some questions i never really found clear answers to.

1. Is E85 safer, less safe, or about the same compared to 93 octane?

2. Is the power increase worthy of buying the pump and injectors

3. Im moving to florida soon and will be without my tools, is the car going to be as reliable as it is now?

4. SHOULD I CHANGE TO E85?!?!?!?
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Old 06-10-2013, 01:12 AM   #2
Andrewxxcarlson
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Yes, lovin every second of it on my 06 stock turbo.
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Old 06-10-2013, 03:38 AM   #3
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1 yes 2 yes 3 unsure and 4 yessss! Use a access port!
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Old 06-10-2013, 05:57 AM   #4
Uncle Scotty
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if I had e85 easily available.....id be all over it like a blanket
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Old 06-10-2013, 07:19 AM   #5
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Quote:
Originally Posted by lmitchell255 View Post
Ive got a 2012 pearl white STI Sedan. Its got a K&N intake, Agency power catless dp, and invidia cat back. Im tuned by precision violence, and currently running on 93. (im wanting to do the walbro 255 and 1000cc injectors most likely)

I love my car to death and am constantly worried about anything going wrong, but at the same time i want more power, just like the rest of us . Would E85 be a good choice for me is my big question. Obviously ive searched and read and read and read all over the forums about E85 but i wanted to ask some questions i never really found clear answers to.

1. Is E85 safer, less safe, or about the same compared to 93 octane?

2. Is the power increase worthy of buying the pump and injectors

3. Im moving to florida soon and will be without my tools, is the car going to be as reliable as it is now?

4. SHOULD I CHANGE TO E85?!?!?!?
E85 is gas. "Safe" means very little. However it does have the advantage of being a much higher octane, which in turn means less chance of predetonation.

Power increase is a fair amount, but we cannot put worth on it. Why? Because everyone's budget and goal is different. If you can justify the required mods, and price of fuel then sure, it can be worth it.

Reliability is decreased whenever you mod a car from stock. Switching fuel types does not increase reliability. Basing reliabiltiy on the change is a bad idea.

Being that you are moving to Florida, you would need to check and see if E85 is even available and at what quanity and cost. This includes your route to Florida from your home. You can still run regular gas in your car if you have an E85 setup, but you need to make sure that 99% of the E85 is out of the system before switching. And to be quite honest, these are all questions for your tuner to discuss with you.
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Old 06-10-2013, 07:46 AM   #6
Uncle Scotty
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Quote:
Originally Posted by lmitchell255 View Post
Ive got a 2012 pearl white STI Sedan. Its got a K&N intake, Agency power catless dp, and invidia cat back. Im tuned by precision violence, and currently running on 93. (im wanting to do the walbro 255 and 1000cc injectors most likely)

I love my car to death and am constantly worried about anything going wrong, but at the same time i want more power, just like the rest of us . Would E85 be a good choice for me is my big question. Obviously ive searched and read and read and read all over the forums about E85 but i wanted to ask some questions i never really found clear answers to.

1. Is E85 safer, less safe, or about the same compared to 93 octane?

2. Is the power increase worthy of buying the pump and injectors

3. Im moving to florida soon and will be without my tools, is the car going to be as reliable as it is now?

4. SHOULD I CHANGE TO E85?!?!?!?

oh...forget e85.....i lived in flowiuha for a LONG time and e85 is availability VERY limited

i wouldnt even think about an e85 tune in florida
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Old 06-10-2013, 08:05 AM   #7
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Quote:
Originally Posted by Uncle Scotty View Post
oh...forget e85.....i lived in flowiuha for a LONG time and e85 is availability VERY limited

i wouldnt even think about an e85 tune in florida
e85 is very available in south Florida so it depends where in FL he is moving.
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Old 06-10-2013, 09:53 AM   #8
Never Summer
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I live on Long Island. Got my E85 tune back in may. Worth every penny. If its avail, I'd say get it! I mean in NY, you're only gonna run E85 between Memorial Day and Labor Day. Outside of those dates the e85 is any where between e70(min allowed, usually winter time) to e80 ish. E85 hits pure after Memorial Day thru out the summer and will start becoming less pure after Labor Day when temps drop off. I'll be back on pump after Labor Day. Certainly have had my fun w e85 tho!
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Old 06-10-2013, 10:22 AM   #9
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The problem with E85 is the blends are still inconsistent. If I had a gas station nearby that had a consistent blend of E85, then it would be a no-brainer. If it's your only car, then I probably wouldn't. If you see sub freezing starts in the winter, you probably want to switch back to a gasoline map for the winter. Switching fuels can cause issues, as the gas tank is never completely empty, even if you pump the remaining fuel out.
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Old 06-10-2013, 10:45 AM   #10
Never Summer
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Quote:
Originally Posted by guroove View Post
The problem with E85 is the blends are still inconsistent. If I had a gas station nearby that had a consistent blend of E85, then it would be a no-brainer. If it's your only car, then I probably wouldn't. If you see sub freezing starts in the winter, you probably want to switch back to a gasoline map for the winter. Switching fuels can cause issues, as the gas tank is never completely empty, even if you pump the remaining fuel out.
Pure E85 again is between the days of Memorial Day and Labor Day. E85 shouldn't really be ran outside those dates due to the ethanol % dropping. Every gas stations within 5 miles of my house that has E85 has been testing pure. I tested a lot of stations by me. Before June, tests were like e75-80. Since June, e85!!!
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Old 06-10-2013, 10:47 AM   #11
Never Summer
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Quote:
Originally Posted by lmitchell255 View Post
Ive got a 2012 pearl white STI Sedan. Its got a K&N intake, Agency power catless dp, and invidia cat back. Im tuned by precision violence, and currently running on 93. (im wanting to do the walbro 255 and 1000cc injectors most likely)

I love my car to death and am constantly worried about anything going wrong, but at the same time i want more power, just like the rest of us . Would E85 be a good choice for me is my big question. Obviously ive searched and read and read and read all over the forums about E85 but i wanted to ask some questions i never really found clear answers to.

1. Is E85 safer, less safe, or about the same compared to 93 octane?

2. Is the power increase worthy of buying the pump and injectors

3. Im moving to florida soon and will be without my tools, is the car going to be as reliable as it is now?

4. SHOULD I CHANGE TO E85?!?!?!?
If I were you, I'd get FIC 1100 injectors and the DW65c fuel pump
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Old 06-10-2013, 10:53 AM   #12
guroove
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Quote:
Originally Posted by Never Summer View Post
Pure E85 again is between the days of Memorial Day and Labor Day. E85 shouldn't really be ran outside those dates due to the ethanol % dropping. Every gas stations within 5 miles of my house that has E85 has been testing pure. I tested a lot of stations by me. Before June, tests were like e75-80. Since June, e85!!!
Yeah, the thing that bugs me is the switching, and the first tank being mixed. What do you do when you switch, and are you getting your E85 at the same station all the time, or do you have a bunch near you?
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Old 06-10-2013, 10:55 AM   #13
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Quote:
Originally Posted by Tripintaz View Post
e85 is very available in south Florida so it depends where in FL he is moving.
Yeah....we have one gas station in Ft Myers area. Depends on what part of SFLA I guess.

Quote:
Originally Posted by guroove View Post
The problem with E85 is the blends are still inconsistent. If I had a gas station nearby that had a consistent blend of E85, then it would be a no-brainer. If it's your only car, then I probably wouldn't. If you see sub freezing starts in the winter, you probably want to switch back to a gasoline map for the winter. Switching fuels can cause issues, as the gas tank is never completely empty, even if you pump the remaining fuel out.
^Ding ding ding

Get tuned on a Winter/Spring Blend and Switch to Summer and see what happens....

If correctly monitored and tuned on a Summer Blend you "should" be good year around unless it get below freezing.

Thing to understand is e85 is in its infancy and car manufactures leave A TON of leeway in the stock ECM. We use the fuel to make power with it period.

If you have a tuner that knows what he is doing you shouldn't have any issues given you have a wideband and monitor AFRs. However, it's that day you fill up and the consistency isn't what it's supposed to be you'll be instantaneously screwed.

What I ALWAYS recommend is getting tuned during Mid-Summer (due to blends) if it's not summer don't go e85 unless you plan on retuning.

If you tune during summer and the e content lowers then you'll just go richer which is all gravy.

The more % of E the more you lean out. So research the blends and the ethanol carried in your area. In most all FL you only have 2 blends.

Reliability and e85 DO NOT go hand in hand......stop letting people fool you. e85 is no way more reliable and consistent than 93 in FL. The car will not be "more safe" with e85. It's not due to the fuel, but the lack of consistency and blends in most areas.

It's safer than say a methanol system, but the basic idea that it's safer than pump gas is absurd.
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Old 06-10-2013, 10:57 AM   #14
sexyyrex
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Quote:
Originally Posted by lmitchell255 View Post
Ive got a 2012 pearl white STI Sedan. Its got a K&N intake, Agency power catless dp, and invidia cat back. Im tuned by precision violence, and currently running on 93. (im wanting to do the walbro 255 and 1000cc injectors most likely)

I love my car to death and am constantly worried about anything going wrong, but at the same time i want more power, just like the rest of us . Would E85 be a good choice for me is my big question. Obviously ive searched and read and read and read all over the forums about E85 but i wanted to ask some questions i never really found clear answers to.

1. Is E85 safer, less safe, or about the same compared to 93 octane?

2. Is the power increase worthy of buying the pump and injectors

3. Im moving to florida soon and will be without my tools, is the car going to be as reliable as it is now?

4. SHOULD I CHANGE TO E85?!?!?!?

Safer, is a relative term. The car will be less prone to knock, saving your ringlands from assploding. I ran 450whp on my stock block with e85, and the only reason why I built my block is because I wanted more. But the general consensus is, if its available, and you aren't driving an hour to and from work, why wouldn't you switch?
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Old 06-10-2013, 11:33 AM   #15
Never Summer
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Originally Posted by guroove View Post

Yeah, the thing that bugs me is the switching, and the first tank being mixed. What do you do when you switch, and are you getting your E85 at the same station all the time, or do you have a bunch near you?
If you fill ur car w E when the gas light is on and u have a little pump gas in there, it doesn't effect it. Well when I switch back to pump gas in sept, I'll just run my car til the gas light comes on-add another 20 miles or so while the lights on then just fill up w pump gas, reflash my car and stay outta boost for the first 10-20 miles. I mean that's how my tuner tuned me for E85. I went there really low on gas, they did at the time remove the remainder of pump because it was an Etune but the switching back to pump/e isn't a big deal. Now I do know off Long Island it's harder to get E like in the city and stuff. I have approx 10 stations that carry E with in a 3-5 mile radius of my house. My car isn't a daily driver. I have a company vehicle. I just went to the WICKED BIG MEET in ct. Fueled up w E and brought an emergency 5gallons worth. E85 mileage around town can def suck. But on the highway it wasn't bad. I got 210-220 miles on 3/4 of a tank while having fun and stretching the leg out on the ct highways.
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Old 06-10-2013, 11:55 AM   #16
Never Summer
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Quote:
Originally Posted by GulfCoastMotorworks View Post

Yeah....we have one gas station in Ft Myers area. Depends on what part of SFLA I guess.

^Ding ding ding

Get tuned on a Winter/Spring Blend and Switch to Summer and see what happens....

If correctly monitored and tuned on a Summer Blend you "should" be good year around unless it get below freezing.

Thing to understand is e85 is in its infancy and car manufactures leave A TON of leeway in the stock ECM. We use the fuel to make power with it period.

If you have a tuner that knows what he is doing you shouldn't have any issues given you have a wideband and monitor AFRs. However, it's that day you fill up and the consistency isn't what it's supposed to be you'll be instantaneously screwed.

What I ALWAYS recommend is getting tuned during Mid-Summer (due to blends) if it's not summer don't go e85 unless you plan on retuning.

If you tune during summer and the e content lowers then you'll just go richer which is all gravy.

The more % of E the more you lean out. So research the blends and the ethanol carried in your area. In most all FL you only have 2 blends.

Reliability and e85 DO NOT go hand in hand......stop letting people fool you. e85 is no way more reliable and consistent than 93 in FL. The car will not be "more safe" with e85. It's not due to the fuel, but the lack of consistency and blends in most areas.

It's safer than say a methanol system, but the basic idea that it's safer than pump gas is absurd.
Rule of thumb w e85-run it in June July August. Those months are the safest/purest to run. Outside of those months even in states such as az and fl, the ethanol % drops off. E85 at its worst is e70 in fall and winter months. Def not recommended for your car then lol
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Old 06-10-2013, 11:56 AM   #17
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As long as you fill up on either fuel when your gas light is on you will be fine. Also E85 allows your engine to run cooler which in turn lowers the chances for detonation and is safer for that reason. E85 is great for making power but be prepared to use a lot for fuel

Also I live in Colorado so I run 91oct during the winter and switch to E85 during the summer months. Lots of people around here run it year around but use a block heater
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Old 06-10-2013, 12:02 PM   #18
Never Summer
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Originally Posted by Kirby10 View Post
As long as you fill up on either fuel when your gas light is on you will be fine. Also E85 allows your engine to run cooler which in turn lowers the chances for detonation and is safer for that reason. E85 is great for making power but be prepared to use a lot for fuel

Also I live in Colorado so I run 91oct during the winter and switch to E85 during the summer months. Lots of people around here run it year around but use a block heater
I don't know how a block heater helps other then cold starts. Again e85 in the winter drops off the as low as E70. Not ideal for our cars/tunes
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Old 06-10-2013, 12:10 PM   #19
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Originally Posted by Never Summer View Post

I don't know how a block heater helps other then cold starts. Again e85 in the winter drops off the as low as E70. Not ideal for our cars/tunes
Can revisions not be made for the change in octane during the winter months?..
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Old 06-10-2013, 12:46 PM   #20
Never Summer
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Originally Posted by Andrewxxcarlson View Post

Can revisions not be made for the change in octane during the winter months?..
It would be the same as pump gas if a revision was made. It's like running a low boost e85 map. Not worth it
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Old 06-10-2013, 01:03 PM   #21
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Originally Posted by Never Summer View Post

It would be the same as pump gas if a revision was made. It's like running a low boost e85 map. Not worth it
If the revisions are free why is it not worth it?
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Old 06-10-2013, 01:04 PM   #22
Andrewxxcarlson
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This is also why I have a 91 and e85 map
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Old 06-10-2013, 01:26 PM   #23
Never Summer
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Explain the actual revision? I too have an e85 map and 93 oct map.
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Old 06-10-2013, 01:55 PM   #24
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Originally Posted by Never Summer View Post
Explain the actual revision? I too have an e85 map and 93 oct map.
I have an e-tune for both fuels from Eric @ TP. When the winter months come around I'm gonna log for him and see what compensations he can make for the lower octane. I'm just curious as I would probably switch back to 91, even though that's crap gas here in Cali, to save gas.
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Old 06-10-2013, 02:35 PM   #25
Never Summer
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Erics maps/tunes caused my buddy's plugs to foul. Car has 9k and the plugs went to crap. The DAM on the ap datalog was .31 from start to finish. Had the plugs changed....all 1's
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