gpr

iTrader: (6)

For some reason my dad being a farmer put e85 in his pickup and ran it, also because it was only $1.99. Obviously the engine light went off after some time. I was telling him how its not that hard to tune it for it, but he doesn't want to tune his pickup.

I got to thinking, it seems e85 uses about 30% more fuel. Would it be possible to simply run 30% larger injectors? Then it will be relatively close and the oxygen sensors will change the short term and long term fuel trims. Only thing i don't know about is how close it would be at WOT, but i could hook up my wide band to make sure it isn't running too lean.

Obviously it isn't ideal, but i think it would work, correct?

dug

iTrader: (10)

I have wondered this myself. If it would be possible to just change the injectors to meet the additional fuel demands.

One problem with e85 is that they change the blend. It can vary all the way down to e70.

metalmilitia606

iTrader: (8)

I did a research paper on E85 for school last year. Not only do you have to compensate for the larger fuel load you also need to upgrade all your lines and everything. The ethanol is corrosive and will eat up all your stock lines unless the car is already flex fuel ready.

evo462

iTrader: (27)

baalic

iTrader: (8)

I hope you got an f... Methanol is corrosive not ethanol... Most gasoline is like e10-e20 already anyways... Don't believe me read the fine print at the pumps....

TransWS6Am

iTrader: (41)

^^ True, and true. Depending on the state or region gasoline contains a percentage of Ethanol.

TransWS6Am

iTrader: (41)

You would have to tune for larger injectors, and E85 AFR is not 14.7, its 9.76. Your O2 sensors are going to try to achieve an AFR of 14.7. So you would have to tune your O2 sensors also. I'm sure there is more to it than that, but that is what i do know for sure. So IMO no it will not work.

NicD

iTrader: (7)

Short answer, yes.

dug

iTrader: (10)

so the o2 sensors wont matter?

NicD

iTrader: (7)

They will still function normally.

98Camarod

iTrader: (43)

You change your target afr from gasoline stoich to e85 stoich.

Schwanke Engines

iTrader: (1)

YES!!!!!! This will work 100%!!!!!! We did this back in 2001 when we didn't have any tuning software and it worked awesome!!! You may still have some cold weather starting issues as a true flex fuel adds more fuel at low temps than on gas. Your trims will still do what they need.

You would need a set of injectors that flows roughly 36lbs/hr if you are going to run E-85 all the time. Otherwise, you could always put in some 33lb/hr's in and run it flex fuel!!!! This would be the best choice. Then, you could run regular 10% all the way up to E-85 and your truck will do the work as long as your MAF and O2's are good.

Or, we could tune it up to be flex fuel.

Any way you do it, give us a call and we can get you setup.

Thanks,
Mark

dug

iTrader: (10)

Is there much advantage to running E85 with nitrous? Is it worth the hassle?

FICINJECTORS

iTrader: (30)

We sell a ton of 30% bigger injectors so e 85 works on a stock tune. Especially for Ford guys. They never tune!, The o2 sensor only measures the o2 it does not care what fuel you run. JMO

TransWS6Am

iTrader: (41)

sorry but what's the point of running E85 without tuning for it? Isn't running it from a performance stand point the fact that you can run more timing with E85..... If your not going to run more timing than why do it?

nodrok

There is no benefit to switching for performance in a NA situation anyways. It would purely be for saving money. Unless you can take advantage of the octane.

Now if your not set up to utilize the octane than your going to lose about 25% of your fuel economy. So e85 would need to be atleast 25% cheaper to be cost efficient. Does if make more power yes, is it cleaner yes, is it renewable yes.


I would run it if there were more pumps around me but its not cost effective yet.

The site change3e85.com sells a flex fuel module that plugs up in minutes they say they have sold over 100k of them. I would guess there maybe enough play in your factory fuel injectors to make it work without replacing them, how ever you may be crossing over the comfort threshold for injector duty cycle.

TransWS6Am

iTrader: (41)

Sorry how is there not benefit to switching for performance? It's around 105 octane, hence you can run more spark advance...... which general nets more power.

nodrok

I you have followed the threads of people that have done it theirs gains are in the 5hp range. I would love for it to be more I would but it doesnt work that way. Do you gain more horse power when your car that is made to run on 87 gets filled with 93. No. Sure a tune will help and you can gain a little bit of power.

Im not trying to kill any dreams of upset anyone, But your real benefit would be a Higher CR or FI setup. Try to search the threads I know there are some around post gains from e85 on a NA setup. It dose smells much better that gas.

jetttstream

iTrader: (7)

I want to do it just for the smell.

Schwanke Engines

iTrader: (1)

Actually, while peak HP number gains are not that great, the torque before and a little after torque peak are wonderful!!! There are some guys out there on NA cars making more than 25 extra ft-lbs before peak torque!!

So, you need to do a little testing or just look at the whole curve and not just peak numbers.