Should I go e85 or stay 93?
07-19-2010, 05:26 PM
#1
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Should I go e85 or stay 93? Guys I've been debating this for awhile now and I wanna get some outside input on the issue.The car is in my sig.I'm not going to be able to forge my motor until this winter and thats hopefully all i want to run is about 15lbs of boost.Now i've got a reputable sponsor in here that tells me he can tune my car for e85 and i can run 14lbs safely on my stock motor besides turbo cam and springs ls2.Now as it sits on the 93 pump gas tune speed density of course it runs very strong on 6.5lbs of boost but im loving the idea of running the corn and turning it up to 14 what do u think?Thanks in advance!
07-19-2010, 05:57 PM
#3
If you can build a capable fuel system there is really no reason not to run E85 in your situation. Just to clarify, you dont run methanol with E85. That would be if you were to stick with 93 pump gas. Im planning on running E85 in a 1200hp turbo build Im trying to complete. Fuel system is going to be insane!
07-19-2010, 06:02 PM
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Yeah Im already running double pumps and the tuner told me to run 80lb ford inj and im going to get the teflon coated fuel lines.Other than that ,that should be it.
07-19-2010, 07:41 PM
#7
The words "stock motor", "14psi" and "safely" don't go together with any fuel.
I would run e85 in your situation. But I would go bigger than 80s for injectors and tune for like 10-11psi instead. Will still make a crapload more power than you have now, and it will be fairly safe if tuned properly.
I would run e85 in your situation. But I would go bigger than 80s for injectors and tune for like 10-11psi instead. Will still make a crapload more power than you have now, and it will be fairly safe if tuned properly.
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07-19-2010, 09:06 PM
#8
[QUOTE=355TurboLT1;13620881] Just to clarify, you dont run methanol with E85.
i have sprayed pure meth in the intake charge for last two years, (90deg day) I can get my iats down to lower 50s, in return more timing=HP
i dont see anything wrong with that at all (each is own
)
i have sprayed pure meth in the intake charge for last two years, (90deg day) I can get my iats down to lower 50s, in return more timing=HP
i dont see anything wrong with that at all (each is own
)
07-20-2010, 10:33 AM
#9
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I am into my second week of e85. was 15lb on pump with 14 deg timing . Timing now at 22 deg and 12 lb boost and I am faster. Go for the e85, it worked wonders for me.
07-20-2010, 10:46 AM
#10
I picked up 5mph at the same boost level at the track last Friday on my daily driver. Not to mention the DA was 2600ft vs. 1500 from the time before when I was on 93oct.
Even if you choose to run only 8-10psi the engine will have a better chance of survival vs detonation.
Oh and a E85 content tester is only $15.00, the runs last Friday were with a bad batch at 70%, vs 80 when I tuned it. AFR went from 11.5 to 10.9, it still ran just fine.
Even if you choose to run only 8-10psi the engine will have a better chance of survival vs detonation.
Oh and a E85 content tester is only $15.00, the runs last Friday were with a bad batch at 70%, vs 80 when I tuned it. AFR went from 11.5 to 10.9, it still ran just fine.
07-20-2010, 11:41 AM
#11
The question has been asked before, and there are pro's to running e-85, however, there are cons as well you may want to take into your consideration.
Running E-85 besides making sure your fuel system can support the E-85 (to include the fuel line fittings, and fuel pumps), you need to note that E-85 comes in different blends (summer and winter for one example). Those different blends will need different tunes. So, you are going to need to have the ability to change your tune on the fly for the different E-85 blends, and a way to tell what blend they currently have at the pump.
You will also get worse mileage with the E-85 (not that most on here really care about mileage vs performance), but if you are doing this trying to save $ at the pump, the worse mileage will equal out to the amount saved in the less expensive fuel.
Also, keep in mind (depending on how much, and where you drive the car) that E-85 is not found at all gas stations. Depending on your area (like mine), the vast majority of the gas stations don't even offer E-85, which would make it more difficult when you are in need of gas (especially on a road trip).
I personally prefer to run 93 octane, and run meth injection. Its WAY cheep, and safe, and just convinient pulling up to any gas station and getting premium not having to worry about changing anything. All while allowing me to run more boost and timing safely, and keeping me away from detonation.
But, many will argue they love running E-85.
Running E-85 besides making sure your fuel system can support the E-85 (to include the fuel line fittings, and fuel pumps), you need to note that E-85 comes in different blends (summer and winter for one example). Those different blends will need different tunes. So, you are going to need to have the ability to change your tune on the fly for the different E-85 blends, and a way to tell what blend they currently have at the pump.
You will also get worse mileage with the E-85 (not that most on here really care about mileage vs performance), but if you are doing this trying to save $ at the pump, the worse mileage will equal out to the amount saved in the less expensive fuel.
Also, keep in mind (depending on how much, and where you drive the car) that E-85 is not found at all gas stations. Depending on your area (like mine), the vast majority of the gas stations don't even offer E-85, which would make it more difficult when you are in need of gas (especially on a road trip).
I personally prefer to run 93 octane, and run meth injection. Its WAY cheep, and safe, and just convinient pulling up to any gas station and getting premium not having to worry about changing anything. All while allowing me to run more boost and timing safely, and keeping me away from detonation.
But, many will argue they love running E-85.
07-20-2010, 12:39 PM
#12
^^^^ very true there are different blends as low as 70% ethanol and as much as 80% during the summer time the blend should be in the high 70 80% margin as long as you tune for the more ethanol blend you almost cant hurt the engine, if you did happen to get a batch of 70% the only thing the engine will do is run a litter fatter (1-2mph on the big end), wideband in the car all the time is never a bad thing just to make sure everything is good to go
the 70% blend just makes the vehicle easier to start in the winter time, witch also is COLDER DENSER AIR in return afrs will not be that far off because of the denser air in the winter time
the 70% blend just makes the vehicle easier to start in the winter time, witch also is COLDER DENSER AIR in return afrs will not be that far off because of the denser air in the winter time
07-20-2010, 01:40 PM
#13
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Yeah thats what hellbent was saying so i wouldnt have to change the tune with the different blends.I know all the cons to e85 already but i just dont like the idea of using 93 and spraying meth in my stock motor at 14lbs of boost now with e85 i feel a little better.That was the whole point of my question though which would make more power reliably gas and meth or straight e85.
07-20-2010, 03:05 PM
#15
E85 rules for street driven FI cars. If it is readily available in your area, do it. It really is better. If you have a hard time finding it at the pump, it would be too much of a pain. I've been on it for over two years with the neon and when I get the SS back together it will be corn as well.
