Hey was wondering how do you feel about the idea of e85 rather than premium,

And secondly, What size injectors would i need to use for E85 and/or Premium to handle 350whp

 

I faced that same decision, and exactly 4 years ago I made the decision to go E85. I haven't looked back.

880s would be fine for 350, but you may as well just get 1000s.

 

E85


Pros

- equivalent to 106 octane
- cheap
- smells goooood

Cons

- only available at certain gas stations
- Fuel system will use 30% more fuel as opposed to regular fuel


Get 1000s

 

93 Octane

 

Please elaborate Shodan. Going boost in the summer w/ 250-300Whp as my goal and would greatly appreciate your opinion.

Only 91 here in Colorado BTW.

 

Well, I've elaborated on this a few times, as Schister66 and I continually go through this debate. Yes, you can make more Power from the E85, but at a severe cost of loss of range of the car, especially if for daily driving use. The BTUs of E85 are about 30 percent lower than the average octane (about 93) to where you'll be at the pump twice as much using the same driving habits as you would with the pump gas. If the purpose is to have a bit more hp without using race gas once in a while, sure, why not. but if the turbo, management, and tuning are correct, you won't need it. Hell, it would be better to run 91 octane and methanol injection. That way you don't depend upon E85 stations all the time. I've had several gas stations literally RUN OUT OF FUEL before the next truck arrives with people waiting on E85 for their Mustangs and Camaros.

If it were me in the Colorado situation, run the 91 with methanol.

 

I would have to agree, if your only shooting for 300-350. Pump gas would be the way to go. Add meth injection if you want added performance for a small price.

 

E85 not needed for your goals

 

as far as e85 goes, what about the thought of it helping your motor last longer. Incase the tune wasn't up to par (enough timing wasn't pulled, and maybe small lean spots here and there) it'd be much safer with e85, since it burns cooler and the octane is higher so it's also more fool proof.


or should that not even be taken into account?

 

depends entirely on how far away you are from an e85 station, for me, im not driving 30 miles to get gas, 93octane it is.

 

^^^^ I agree. Decision should be made on availability.

 

If you have E85 in your area and dont plan on venturing out of the range of the pumps then use it, even if your only shooting for 350whp its octane rating and slight cooling properties warrant the use of it IMO. I would feel much better about making a long pull with E85 in my tank vs crappy pump gas... and having burned up a motor before running less than 350hp with 93oct (was a crappy batch) I will prob never use it again in a boosted car.

 

Yeah.... It certainly isn't necessary for your goals. Decision should really be based on availability like they say. In my case it's no inconvenience at all to run strictly E85, and I like to push my GT30 to near 30psi sometimes. :D

 

i personally built my car for use of e85, and after of about 3 weeks of driving it which is about 2 times a week and weekends i got sick of traveling 30min to get gas. If you get a different blend of e85 it throws off the tune, and i just got sick of it so i switched over to pump gas and i still made my goal of 500whp on 93 octane!! i love it especially since i can fill up anywere (mobile my preffered choice) which is like 2 min from my house so my choice 93octane ftw!!

 

Thanks for the opinions. I'll do a little more research as I get closer. There are several E85 stations in Colorado but the inconvenience factor and varying grades of E is definitely something to consider.

 

We still have yet to switch to a lower concentration of ethanol here.

I test the E85 from the pump at the Sheetz across the street from my shop every two weeks or so, and we still have 85%.

- Derek

 

I wouldnt worry too much about the blend differences on low power setups if you were tuned on E85 and ended up pumping E70, I was actuallly tuned on E70 and didnt realise it until spring when E85 came back around and my car was quite lean all across the board. worst thing that will happen IMO is you will be a point or so rich which might cause some WOT issues, even E70 has a higher octane rating than 93.... I ran both blends in my car and didnt notice a bit of difference besides the afr variances which was easily fixed in my ems, timing tables remained unchanged.

 

How does that make your engine "last longer"? No matter what the fuel is, if the tune is bad, regardless, its not going to last any longer with a higher octane fuel..hell, even C16 or other VP fuels

 

I think hes just referring to the fact that E85 is more forgiving then 93

 

This is what i was aiming towards

 

Of course that still isn't true.

 

Explain further plz...

 

For his goal, I would listen people in this thread saying '91 with alky injection. With a good tune you should be fine with pump gas at that power level. I been using E85 for a few years now, but there's two E85 stations five minutes from my house

 

E85 it's good for making power, runs cooler, etc.. Plus it's better for the environment. Does anyone care about the environment? More of the money paid at the pump for E85 stays in America instead of going overseas (Brazil is a good example of this). USA could do a 180 if we reduce or stop buying foreign oil. Regardless a good tune and a good efficient motor will not be to far behind in fuel mileage for daily driving and a couple WOT pulls.

 

^^^ Not to mention gas prices are on the rise again... Premium is like $3.30 here and E85 is still $2.50ish. E85 took a big plunge in sales/popularity the last few yrs when gas prices dropped back down. As gas prices continue to rise again E85 prices should only rise a little bit making the increased fuel consumption a non issue and making it a better fuel all around if you can get it conviently in your area.

Or just have the car tuned on both fuels, shouldnt cost too much more for a 2nd map.