Fs: COMPLETE ECUTune 2v7F setup

[YourConfused]

Originally Posted by K_Dub

I've read up on it further and found that fact out. It's lower energy also results in needing the big injectors and so on. Is the mileage considerably less than with Premium? One site talked about corroding fuel lines on older cars. Is your fuel pump or any lines upgraded as well. Like I said, I want to improve some of this car's weaknesses, and this chip is high on the list, but I want to make sure I don't need to expedite some of these other things to go first.

And thanks for getting back to me.

Due to E85 being 30% less thermally efficient than unleaded requires an almost equal amount to be injected to keep the motor running properly. Production vehicles from gm, ford and nissan average figures in the 11-15 mpg range while operating on E85.

The higher octane rating allows for increased performance at higher compression ratios and the Alcohol content also cools the combustion chambers which should demand a hotter spark plug and more timing than stock if you want to have a well running motor.
Basically there is no reason to run E85 if you just want better fuel mileage.

I have heard the same thing about the erosion of the fuel lines, but have not verified this in relation to the materials of the components on our car. I will admit that I haven't researched this much though.

I prefer performance over looks, but love it if I can get improved performance while looking stock. I went for suspension first and then power only due to needing new struts really really bad. I don't know what your aspirations are, but doing whatever you can afford without cutting corners will net the best results.

[1986nate]

Originally Posted by YourConfused

Due to E85 being 30% less thermally efficient than unleaded requires an almost equal amount to be injected to keep the motor running properly. Production vehicles from gm, ford and nissan average figures in the 11-15 mpg range while operating on E85.

The higher octane rating allows for increased performance at higher compression ratios and the Alcohol content also cools the combustion chambers which should demand a hotter spark plug and more timing than stock if you want to have a well running motor.
Basically there is no reason to run E85 if you just want better fuel mileage.

I have heard the same thing about the erosion of the fuel lines, but have not verified this in relation to the materials of the components on our car. I will admit that I haven't researched this much though.

There is a guy here locally that has run E85 through an older(early 90's) Toyota for well over 5 years and 70,000 miles with absolutely no problems.
It does burn hotter, faster and so your gas mileage will suffer. For vehicles equipped for it, it drops gas mileage by about 25-35% compared to regular so if your looking at using E85 as a cheaper alternative to premium, forget about it as E85 at the cheapest is usually only 25% cheaper than regular and most places its about 18% cheaper.

[Zandar]

Originally Posted by 1986nate

There is a guy here locally that has run E85 through an older(early 90's) Toyota for well over 5 years and 70,000 miles with absolutely no problems.
It does burn hotter, faster and so your gas mileage will suffer. For vehicles equipped for it, it drops gas mileage by about 25-35% compared to regular so if your looking at using E85 as a cheaper alternative to premium, forget about it as E85 at the cheapest is usually only 25% cheaper than regular and most places its about 18% cheaper.

From what I've researched, E85 will not corrode your fuel lines. I run a blend in mine with no mods of about E35-E40 and haven't had a single problem (been running it for about 5k). You may need to replace your fuel filter after the first 5-10k on straight E85, but that should be it. Your fuel line is already able to use ethanol (premium gas is E10). It will, however, clean out your fuel lines; hence the potential need for a new fuel filter after it gets all the gunk out. I've also heard hotter sparks are good, too, but I haven't seen anything to back this up.

Also, E85 runs cooler, not hotter, than premium. You can take higher compression, higher boost, and more timing advance than premium gas, but that won't factor in for your potential setup. E85 is anywhere between 105-115 octane, as well.

Gas mileage is a variable. I've heard people have as poor as 30% less efficiency and people with no change. Literally, YMMV

[sicksubie]

Originally Posted by Zandar

From what I've researched, E85 will not corrode your fuel lines. I run a blend in mine with no mods of about E35-E40 and haven't had a single problem (been running it for about 5k). You may need to replace your fuel filter after the first 5-10k on straight E85, but that should be it. Your fuel line is already able to use ethanol (premium gas is E10). It will, however, clean out your fuel lines; hence the potential need for a new fuel filter after it gets all the gunk out. I've also heard hotter sparks are good, too, but I haven't seen anything to back this up.

Also, E85 runs cooler, not hotter, than premium. You can take higher compression, higher boost, and more timing advance than premium gas, but that won't factor in for your potential setup. E85 is anywhere between 105-115 octane, as well.

Gas mileage is a variable. I've heard people have as poor as 30% less efficiency and people with no change. Literally, YMMV

Spot on....

[1986nate]

Originally Posted by Zandar

Also, E85 runs cooler, not hotter, than premium. You can take higher compression, higher boost, and more timing advance than premium gas, but that won't factor in for your potential setup. E85 is anywhere between 105-115 octane, as well.

Yeah, I was thinking backwards when I said hotter lol.
As for premium being E10, in most areas, yes. I always go to the one station here that still offers pure gasoline as regular and premium. Also there are a couple other stations around here that have lower grades in E10 but then have premium as 100% gasoline.

With my 95 cutlass I had, It would average about 22mpg on regular (87 octane) with ethanol added, 24.5 mpg with regular true gasoling (87 octane) and would get 26 mpg with 89 octane 100% gasoline. This was over a few tanks of gas with the same driving habits so don't think it was just a one tank fluke. Ever since seeing that, I try to use pure gasoline as much as possible

[K_Dub]

That's more like it! Thanks for the input guys.

I was under no illusions that this would increase my mileage, however if I break even with the cheaper fuel I'll be a happy camper. If not, at least I won't be pouring my hard earned money into gas cartels. So if this won't hurt my ride, will increase my performance, get me off of fossil fuels, and open the door to all the big mods I would like in the future: sign me up.

Zandar, you mentioned running a low ratio blend in your car, are you using this chip as well? I ask because, my SVX gas gauge being what it is, I imagine I will always have a little gas sloshing in my tank even after I fill up on E85 and flip the switch. I usually only put 12-13 gal in my car on a fill up, so I hope that flipping the switch doesn't require a full drain of the tank and can handle a little blend.

Next stop, forced induction or maybe some cams. The sky's the limit right? Thanks again for all the good advice.

[Zandar]

Mine has no mods; that's why I'm running no more than E40 (any more and it throws a CEL). I have been toying with the idea of addind an adjustable fuel pressure regulator and going full E85, but funds are low at the moment. That, and I have yet to go looking for the FPR to see how difficut it would be to switch out!

As for gas, just run your gas down as far as you can before switching to E85. The 2v7F is switchable, so run it on gas until about 40-50 miles after your gas light comes on (provided you're not driving too spirited). Your fuel pump mixes the gas, so after a tankful the amount of E10 left in your tank will be negligible.

I know that flex fuel cars get worse efficiency, and I think ours might on E85 with just the chip. With an entirely new fuel map (including different timing advance), a hotter spark, and higher compression (or forced induction) I believe the differences are smaller (e.g., a turbo EG33 on premium vs. a turbo EG33 on E85, both tuned for the fuel they use, should be at least similar in fuel economy). But if you're doing all that, you're more interested in hp than MPG!

[Seraphinwolf]

Okay so enough derailing. Is this set up sold or what?I don't plan on ethenal at all as NO where near me sells it but it at the right price the rest is tempting to get a bit more fuel econemy with some more power at the same time. Kinda wish my 94 was OBDII sometimes to open source it but oh well I get to not worry about the emissions. Maybe I'll just save for the Hydra. Hydra + H6= WIN That's why my EZ30R will be Hydra controlled.
-Gaddis

[YourConfused]

Originally Posted by Seraphinwolf

Okay so enough derailing. Is this set up sold or what?I don't plan on ethenal at all as NO where near me sells it but it at the right price the rest is tempting to get a bit more fuel econemy with some more power at the same time. Kinda wish my 94 was OBDII sometimes to open source it but oh well I get to not worry about the emissions. Maybe I'll just save for the Hydra. Hydra + H6= WIN That's why my EZ30R will be Hydra controlled.
-Gaddis

Yes it is still for sale.

[K_Dub]

Originally Posted by YourConfused

Yes it is still for sale.

Sorry for leading you on... My plans have been derailed by a couple of repairs and Chiropractor bills. I've researched the beejeepers out of this and it still looks like a good deal. If I get better situated and it's still available I'll jump on it, but if anyone else has the resources available now by all means get it.

[YourConfused]

Originally Posted by K_Dub

Sorry for leading you on... My plans have been derailed by a couple of repairs and Chiropractor bills. I've researched the beejeepers out of this and it still looks like a good deal. If I get better situated and it's still available I'll jump on it, but if anyone else has the resources available now by all means get it.

My plans charge constantly, hence the selling of this setup with so few miles on it.

[Seraphinwolf]

If I have money in a few months I'll totally get this. Fuel bump is the biggest plus along with the injectors. I just need to do my coilovers and keep up with getting the parts I need to finish my Impreza at the same time. fuel economy bump will help a lot plus the small power up will be nice. to go with my dialy driving or starting track days.
-Gaddis

[YourConfused]

Originally Posted by Seraphinwolf

If I have money in a few months I'll totally get this. Fuel bump is the biggest plus along with the injectors. I just need to do my coilovers and keep up with getting the parts I need to finish my Impreza at the same time. fuel economy bump will help a lot plus the small power up will be nice. to go with my dialy driving or starting track days.
-Gaddis

At the rate things are going you may just end up with it.

[subster]

Are these still for sale?

And does anyone know if they work with the cams for sale by ecu tune?

[K_Dub]

My MAF is on the fritz. How convienant.

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