How to e85

[Wicked]

I miss having E. My Cobalt was a monster on it. Gonna be making the switch to a 4 gal mix IF THE DAMN SNOW EVER STOPS!

[navyspeed3]

Originally Posted by ABolewski @phate; is. And I believe the general consensus was that the E-85 specific pump was bull shit, and you don't need it. Although I have read that even on a k04 you will run out of fuel on 100% E which means you need some form of port injection (5th port or one of the new JMF mani's). I plan on running strait E pretty soon here myself.

I was just more overall curious to see how many people were running a straight E or had a tune for at the track for it. But thanks for the feedback.

[ajkulish]

to everyone running corn: did your gas mileage get fucked upon switching, or is it similar to just running 93

[Mfinlay04]

Originally Posted by ajkulish to everyone running corn: did your gas mileage get fucked upon switching, or is it similar to just running 93

Who cares. Corn is too much fun to be worried about MPG. Wtf

But yes corn kills, no murders mpg. Between constantly flogging it and corn having less BTU than gasoline

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[Enki]

Only if you stomp the fast pedal. I get better mileage than stock on 50/50 mix (~e42)

[ajkulish]

thanks, i am hopefully buying an ms3 this week and i am trying to decide my plans with it.

[DumbDave]

Anyone notice less NVH switching to E85? At about 10 miles into my first tank I noticed a significant drop in the vibes. My rearview mirror is no longer useless @ speed, and I can start in 2nd gear without the engine bogging. Is that just a side effect of the engine not having to work as hard?

Made me crawl underneath to make sure I didnt snap my JBR wishbone.

Thoughts?

I'm running a 5gal mix of summer blend (E37).

[Enki]

It does run smoother, yes. Also, you can shift at about 2500 and it will pull normally. That is what you should do to get better mileage (6th gear @ 45 mph FTW).

[DumbDave]

Awesome, thanks for the info and piece of mind

[Mfinlay04]

Originally Posted by Enki It does run smoother, yes. Also, you can shift at about 2500 and it will pull normally. That is what you should do to get better mileage (6th gear @ 45 mph FTW).

Not sure if serious nor trolling. 45mph in 6th gear is <2k rpms?!

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[Dizzy Turbo]

He's serious, I started driving like that on my ethanol map and it helps mpgs a lot.
Edit: as long as your not on a hill haha

[Enki]

Originally Posted by Mfinlay04 Not sure if serious nor trolling. 45mph in 6th gear is <2k rpms?!

Dead serious. You can't go as low with only 50/50 mix, but these engines on corn love to cruise at 2k rpm.

@phate;
@silvapain;
Back me up gents.

[silvapain]

Originally Posted by Mfinlay04 Not sure if serious nor trolling. 45mph in 6th gear is <2k rpms?! Sent from my Galaxy Nexus using Tapatalk 2

He's not saying to floor it at 45 MPH in 6th gear, but the engine has no problem cruising at that low an RPM with E85. I typically try to keep it in the 2K RPM range when cruising at a steady speed, even when on pump gas.

[Deldran]

Hell i cruze at 40 in 6th on 93. Now if i need to accelerate or anything like that down shift for sure. But keeping a constant speed on the extremely flat road in town on the way to work i see no ill effects

[El_Diablo]

6th gear can be utilized at 35mph as long as you're not attempting to go up a grade or increase speed.

[Dizzy Turbo]

Ummmm 6th? Haha

[El_Diablo]

Originally Posted by Dizzy Turbo Ummmm 6th? Haha

Fixed, thanks!

[Mfinlay04]

Well we don't have too many flat roads around here. I typically drive with the rpms between 2.5-3k. Any less would scare the shit out of me.

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[specvspeedfreak]

Just "tested" this 6th gear thing and I realized I do it all the time without noticing (I try to hypermile since on E as much as I can).. 6th gear at 1.8K-2.2K can get you 35+ mpg easily if you control the throttle correctly.

[El_Diablo]

Originally Posted by Mfinlay04 Well we don't have too many flat roads around here. I typically drive with the rpms between 2.5-3k. Any less would scare the shit out of me. Sent from my Galaxy Nexus using Tapatalk 2

My elevation swing just going to and from work is over 300ft though there are still plenty of places where I can cruise at a low RPM in 6th. Typically, most of my drive is done in 6th with not much time spent in 5th and just one hill in 4th. My speed is usually right around 55-65mph.

[Enki]

Originally Posted by specvspeedfreak Just "tested" this 6th gear thing and I realized I do it all the time without noticing (I try to hypermile since on E as much as I can).. 6th gear at 1.8K-2.2K can get you 35+ mpg easily if you control the throttle correctly.

That should be closer to 40-45 assuming a moderate mix (50/50) and 45-65 mph.

[GeorgeTaper]

I have a local E85 pump. A few of them. Based on this. And that my friend runs E85 through his evo and loves it. I would love to get in on it. MAX 50/50 though after reading this. Which tuner would you recommend for 50/50 Ethanol. i need a full tune done anyway and since E85 is so available it would seem right. E50* and 93.

[Wicked]

You can drop to 87 when you're running mixes. The E85 more than makes up for it. But many people use Freek tuning or Rich tuning

[GeorgeTaper]

Originally Posted by Wicked You can drop to 87 when you're running mixes. The E85 miss than makes up for it. But many people use Freek tuning or Rich tuning

Next pay check I think I'll give Rich Tune a shout. Thanks for the help my friend

[maxspeed]

Finishing up my e25 mix base map. I used the mix sheets to get my fsg and scalar numbers. The class 2 and 3 blend numbers are close the scalar is the same and ATR rounds the FSG to the same so I should be fine using both blends? Also lowered boost (17.5) and timing a lot because I am gonna take it little slow. AFR is 11.4 to keep it safe. Anything look wrong with this timing besides being low numbers to start with?

Another question is I am in college so I don't drive that often and my car sits a decent amount. I was planning on do a small fillup 1gallon e85 1 gallon 93 if being on the empty light means 2 gallon left. I did pickup the marine stabilizer though. So has anyone used the sta-bil marine stuff and had sucess or what should I do?

[phate]

That mid range timing isn't really in line with the top end timing. It's WAY aggressive compared to the top end. Quite a bit for a base map.

[maxspeed]

Originally Posted by phate That mid range timing isn't really in line with the top end timing. It's WAY aggressive compared to the top end. Quite a bit for a base map.

If the table I posted doesn't look good im just use a ots timing to start with not an expert at atr yet but I think I know enough to try out e85. I haven't had to much experience with changing timing so I will just use that table and do the small increases instead of trying to make my own base.

[sallyspeed3]

Originally Posted by maxspeed So has anyone used the sta-bil marine stuff and had sucess or what should I do?

Closest station for me is about 40 minutes away. So what I do is whenever possible head there on a weekend when I'm able and bring 3 5 gallon containers with me. I put in an ounce or so of the stabil ethanol treatment in each container and fill each one with 4 gallons. Stuff works great, I've had them sit for as long as 2 months and never had any problems.

[maxspeed]

Originally Posted by sallyspeed3 Closest station for me is about 40 minutes away. So what I do is whenever possible head there on a weekend when I'm able and bring 3 5 gallon containers with me. I put in an ounce or so of the stabil ethanol treatment in each container and fill each one with 4 gallons. Stuff works great, I've had them sit for as long as 2 months and never had any problems.

Thanks for the info. How do you determine how many gallons are in the tank when the e light comes on? It seems like most people just put less fuel to make sure there mix is correct and not go for a full tank?

[Dizzy Turbo]

Exactly right, put in the largest mixture that you think will fit. I do 4 gal of e and 8 of pump when I get just under a quarter tank and that's completely full

[El_Diablo]

I take mine down until the gauge reads empty and I can usually fit right at 14 gallons which for me means a 5/9 mix. Your car may be different so keep a spare can of 93 in the trunk until you figure it out.

[maxspeed]

Originally Posted by El_Diablo I take mine down until the gauge reads empty and I can usually fit right at 14 gallons which for me means a 5/9 mix. Your car may be different so keep a spare can of 93 in the trunk until you figure it out.

I will probably fill up with a decent amount less than what would be a full tank then when I figure out what my empty light reads add more. But I still need to decide if I am going to try and tune this or get an e tune. I have been learning a lot last couple months but e85 seems little tougher for me.

[El_Diablo]

Best way is to take it all the way down to empty. Fill it to the top with 93 and see what it takes.

[maxspeed]

Yeah im going to do that soon. Takes me awhile to kill a tank in college I will have to look around for some good driving roads around here to go through my next tank.

[Enki]

Take it down to a quarter tank, refill like normal then use that number for your overall fill rate; leave any additional remainder off just to be safe though.

[El_Diablo]

I drive way to much for that.

[maxspeed]

Originally Posted by El_Diablo I drive way to much for that.

Yeah in the summer that wouldn't be ideal for me but at school not so much of a problem

[sallyspeed3]

Originally Posted by maxspeed Thanks for the info. How do you determine how many gallons are in the tank when the e light comes on? It seems like most people just put less fuel to make sure there mix is correct and not go for a full tank?

Might be different for others, but when my light comes on I put about another 10-15 miles on the car and then head to the gas station. 8 gallons of 93 and I top it off with the 4 gallons of E85, has never been a problem.

[maxspeed]

Originally Posted by sallyspeed3 Might be different for others, but when my light comes on I put about another 10-15 miles on the car and then head to the gas station. 8 gallons of 93 and I top it off with the 4 gallons of E85, has never been a problem.

I though you put the e85 first but if you know your own tank I guess it doesn't matter.

[silvapain]

Remember that the Pu has a 16 gallon tank and the Juan is only 14.5 gallons, so how much you add at what gauge level depends on your MY.