4 Gallons of e85 mixed with 92 pump! What a difference!

[bsbllfit7]

So i have been continually adding 4 gallons of e85 to each fill up. The results are awesome and have me contemplating running e85 all the time! The extra octane is allowing slightly higher boost, leaner afr's and more timing with only 4 gallons! Before i would knock with any advance at 20 psi on 92 oct and now im running 22.5 up to 24 at redline with 3-7 degrees of advance. I also wasnt able to go any leaner then 10.1 afr before doing this and now im right around 11.1. I did have to compensate and change my Speed density table to accommodate for the need for more fuel with e85. The beauty is if i need to fill up and am not at a area where i have a station i just zero out my sliders and remind myself not to go full throttle and she performs perfectly. IDC's are at about 65% with the 4 gallons of e85 and dsm link estimate of horsepower is around 420whp! I am going to go with 5 gallons next time and see how that performs. My idc's should still be under 80% but will probably allow me to lean it out even more and possible a degree or two of extra timing. This is all temporary tell i get new cams and meth/water injection but the results are amazing!

 

[skatershawn]

Also this is e85 mixed with 92 pump gas not 93.

Sorry, we have 93 pump gas here in Texas! And i only mixed the two to test what i had read! If i had the spare cash right now i would be converting over to straight e85 but money is tight for me! :/
And i feel you on using free gas, i sure as h3ll wish i had that pleasure!

e85 maybe cheaper but you only get 70% of the fuel economy you do on pump gas. it burns much faster than pump gas too, that's why you compensate it with bigger injectors, it's not as combustable so you need to dump in more gas. yes it's a 40+hp gain but after running it for 2 months in my STi, it's a straight up pain in the as*, im converting back to 93 in just a week or two.

Really for how cheap it is, your pretty much breaking even with MHG:Cost ratio!!
But I can see how it may be a pain for some, for the fact that is not at every pump like 91-93oct is.
Here in Austin last I checked, e85 was $3.20/gal and 93oct is $3.99/gal.

 

[bsbllfit7]

Only 40hp gain? most people are over a 100hp difference running e85 compared to pump!

Oh i didnt realize you were mixing yourself to see the results. The results should be even better with 93, should yield a higher final octane rating.

 

[zcoh2gdsm]

Sorry, we have 93 pump gas here in Texas! And i only mixed the two to test what i had read! If i had the spare cash right now i would be converting over to straight e85 but money is tight for me! :/
And i feel you on using free gas, i sure as h3ll wish i had that pleasure!



Really for how cheap it is, your pretty much breaking even with MHG:Cost ratio!!
But I can see how it may be a pain for some, for the fact that is not at every pump like 91-93oct is.
Here in Austin last I checked, e85 was $3.20/gal and 93oct is $3.99/gal.

yea it's cheaper but it seems like every day im at the same damn pump to get gas... it's only 2 miles from my house, but it's the only place is damn near 30 miles after that to get gas. cost:mpg is worse. i end up spending $15 get 4-5 gallons at $3.20 a gallon, STi stock fuel efficiency () is 18mpg, i now get about 14mpg

Only 40hp gain? most people are over a 100hp difference running e85 compared to pump!

Oh i didnt realize you were mixing yourself to see the results. The results should be even better with 93, should yield a higher final octane rating.

40+hp, it varies on the setup, i had my STi on a mustang dyno, they read lower than a dynojet or dynopack, im sure people have made over 100hp increases but to me it's really not worth the hassle.

 

[thector1]

So.. It's safe to mix a little E85 with 93 without changing anything in the setup? Just to give me a higher octane?

 

[zcoh2gdsm]

i wouldn't suggest doing it. ethanol is plastic corrosive and dsm's have plastic gas tanks.

 

[jrohner]

i wouldn't suggest doing it. ethanol is plastic corrosive and dsm's have plastic gas tanks.

Thanks for coming on to give bogus info.

 

[zcoh2gdsm]

Thanks for coming on to give bogus info.

yes, that's exactly what i came to do. please do some research then come back and give me your opinion.

 

[jrohner]

My opinion is that experience beats "well I heard this / read this online" every time. I've ran E85 in my DSM's for 5 years, and I started running it in my racecar back in 2001.

Ethanol is not Methanol

 

[zcoh2gdsm]

My opinion is that experience beats "well I heard this / read this online" every time. I've ran E85 in my DSM's for 5 years, and I started running it in my racecar back in 2001.

Ethanol is not Methanol

i run e85 in my STi, im pretty sure i've done a lot of research on how this works. you should consider doing the same.

ethanol is plastic/aluminum/rust corrosive, IT WILL EAT THROUGH YOU GAS TANK! over time... i didn't say in 10-15 minutes. these guys aren't even running proper e85 setups, they're potentially doing more damage to their car than what they said is "doing better"

i dont even have a response for your last line, idk what that's supposed to mean.

 

[bsbllfit7]

yea it's cheaper but it seems like every day im at the same damn pump to get gas... it's only 2 miles from my house, but it's the only place is damn near 30 miles after that to get gas. cost:mpg is worse. i end up spending $15 get 4-5 gallons at $3.20 a gallon, STi stock fuel efficiency () is 18mpg, i now get about 14mpg


40+hp, it varies on the setup, i had my STi on a mustang dyno, they read lower than a dynojet or dynopack, im sure people have made over 100hp increases but to me it's really not worth the hassle.

What afr were you running and how much timing advance was the car seeing? If you dont take advantage of the fuel and run a 12-12.5 afr and high timing it is a waste. You should definitely have been seeing much bigger gains than that with straight e85 from pump.

Ethanol does not eat your gas tank. What it does do is break up all the settled sediments and additives from the gas tank from the years of running pump gas. Thats why its recommended to swap out fuel filters a couple times during the first couple weeks or months of using e85. The only thing you need when using e85 is bigger injectors, something to tune with, and a 255hp fuel pump. All of which i have minus the bigger injectors . Although with the 4 gallons of e85 i wasnt even really coming up on 70% IDC's with 22 psi peaking at 24.

 

[zcoh2gdsm]

What afr were you running and how much timing advance was the car seeing? If you dont take advantage of the fuel and run a 12-12.5 afr and high timing it is a waste. You should definitely have been seeing much bigger gains than that with straight e85 from pump.

ill have to ask my brother, it's his DD now, he's had it retuned when i sold it to him so idr what it was, i think i still have the logs somewhere on my computer ill have to find them.

 

[bsbllfit7]

If i was to run full e85 with my setup i would more than likely be seeing close to 510whp and idk what wtq. Just adding in these few gallons has given me 30+ whp gain according to link. I was able to lean it out more and add back in timing. My setup did not like pump gas whatsoever!

 

[jrohner]

i run e85 in my STi, im pretty sure i've done a lot of research on how this works. you should consider doing the same.

ethanol is plastic/aluminum/rust corrosive, IT WILL EAT THROUGH YOU GAS TANK! over time... i didn't say in 10-15 minutes. these guys aren't even running proper e85 setups, they're potentially doing more damage to their car than what they said is "doing better"

i dont even have a response for your last line, idk what that's supposed to mean.

Then post up some actual proof of how my 10 years of e85 experience without issue is somehow a string of random flukes that defy nature.

I think everyone who posts like you is confusing ethanol with menthanol. Oh, and even methanol must not eat through plastic tanks as what in the world would racecars do about that issue? Plus, are you saying they do something special to the plastic barrels you buy it in, that get brought back and refilled for years?

Plastic tanks are actually recommended for running ethanol, as steel can rust because of ethanol being hygroscopic.

 

[zcoh2gdsm]

your setup isn't tuned correctly for straight pump gas then and it needs to be tweaked.

ethanol is water attractive, the water settles in the gas tank and creates rust, ethanol is rust corrosive, like i said you wont see it eat your car apart but over time yes it physically will start to create holes in your gas tank, that's just the nature of it.

 

[bsbllfit7]

your setup isn't tuned correctly for straight pump gas then and it needs to be tweaked.

ethanol is water attractive, the water settles in the gas tank and creates rust, ethanol is rust corrosive, like i said you wont see it eat your car apart but over time yes it physically will start to create holes in your gas tank, that's just the nature of it.

No matter what I did the knock wouldn't go away unless I richened it up drastically but then i lost power. There is some component holding me back and i believe its my lack of upgraded cams and ported head. Everything else is built except for that portion!

 

[jrohner]

your setup isn't tuned correctly for straight pump gas then and it needs to be tweaked.

ethanol is water attractive, the water settles in the gas tank and creates rust, ethanol is rust corrosive, like i said you wont see it eat your car apart but over time yes it physically will start to create holes in your gas tank, that's just the nature of it.

So plastic rusts now huh?

Plastic tanks are actually recommended for running ethanol, as steel can rust because of ethanol being hygroscopic.

If your 'over time' means 100 years, who cares and what's to say gas wouldn't have been worse? Look at what gas does after a few years, it's not good.

Post up your proof or give it up already.

 

[zcoh2gdsm]

Ethanol
http://www.biofuelshub.com/features/18-special/1074-is-e10-corrosive
scroll down for pictures - http://continuouswave.com/ubb/Forum3/HTML/017671.html

 

[-red97rum-]

Why would anyone cheat themselves...

E85 is gods gift to man. Run a full tank and never look back.

Amen to that

 

[TSimage]

zcoh2gdsm hasn't said anything right yet.

BTW I'd LOVE for you to debate any aspect of running E85 or tuning it... It's been a while since I have flexed around here.

 

[bsbllfit7]

Even if e85 is corrosive no one has had detrimental side effects with their fuel tank that have used it yet! Many of the top tuners are using ethanol to create their power. If I were you i would look at the top dyno cars and top 1/4 mile et cars. How many are using ethanol?

 

[JusMX141]

Thanks for coming on to give bogus info.

Do you mean in regards to the tank not being plastic, or that Ethanol will ruin plastic?

2G AWD's have plastic tanks, I believe the 2G FWD's all have metal tanks.

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[Calan]

ethanol is plastic/aluminum/rust corrosive, IT WILL EAT THROUGH YOU GAS TANK! over time... i didn't say in 10-15 minutes.

...but over time yes it physically will start to create holes in your gas tank, that's just the nature of it.

Is E10 Corrosive? - BiofuelsHub.com

Did you even read any of the corrosion article you linked to? Apparently not, so here's a few quotes from it:

"But the corrosive effects of ethanol are actually very minimal and are not very destructive. Also, the issue of fuel being corrosive is not something new. After all, even regular gasoline (and all types of liquid) is also corrosive."

"As mentioned, the corrosive effects of ethanol-blended gasoline or E10 are not highly-detrimental."

"Newer models (from 1990s and up) are equipped with fuel systems that can withstand the corrosive properties of both water and fuel. In addition, the distilling and production processes employed by ethanol producers and oil companies nowadays are more superior compared to those of yesteryears. For instance, chemical additives are now added to the fuel to inhibit the corrosive properties."

"With regard to the corrosion of gas tanks, there have been some concerns over the rusting of gas tanks when loaded with ethanol. This may be true for older car models since their gas tanks are made from steel and are coated with lead."

"Clearly, ethanol-blended fuel or E10 does not corrode the fuel system, gas tank, and other components of vehicles."

********

Please stop spreading misinformation and fear. Unless you have personal experience of E85 directly causing issues on your own personal DSM, you really should just stay out of that aspect of this conversation.

 

[Slow91Laser]

Please stop spreading misinformation and fear. Unless you have personal experience of E85 directly causing issues on your own personal car, you really should just stay out of that aspect of the conversation.

Thank you!

 

[jrohner]

calan - exactly what I thought when I read his links. He was proving himself wrong, yet somehow thought he was proving himself right.

The only effect I've seen when running ethanol (besides the black goo), is some rust on carburetor throttle plates.

 

[anchew02]

1g have steel tanks.... ;0)