needtransam

iTrader: (2)

Ok so I just noticed the past month they have installed e-85 gas stations around my city, and was reading on it and people say you need a tune and bigger injectors, my question is could I run e-85 like half a tank like 5 gallons and the rest 87 or 91??

Thanks

Marc 85Z28

iTrader: (8)

No. Dumb idea.

redtan

iTrader: (5)

You could, but it would be a bitch to tune.

sscamaroburn02

iTrader: (14)

Nope don't do it

need2speed94

Why not just run straight E85? Bigger (to start 42#) injectors and without a doubt a tune.

Exeodus

iTrader: (1)

But don't you also need stainless fuel lines because E85 is more corrosive that regular gas?

need2speed94

E85 is *less corrosive than regular gas

TransAmWS.6

You should read this if you're interested in E85, I would not try your idea out by any means.

https://ls1tech.com/forums/fueling-i...r-ls1-e85.html

rholdcroft99

iTrader: (2)

i have run a mix of e85 and regular unleaded several times, and and the only problem is the check engine light would come on for lean code. not necessarily lean running and damage, but the computer was having a hard time adding enough fuel to keep short term and long term trims normal. my car with 6 gallons of e85 and rest 93 chevron would have long term fuel trims of 14-15%, nothing damaging. i have seen many cars with higher from just a vacuum leak.
anyways, the car runs cooler, has alot more power and the throttle response and mid throttle torque is awesome. not to mention that my tailpipes became clean in 1 tank full

my car is just bolt-ons, so just a tune with a little more fuel is all thats needed to keep the fuel trims in check

joecar

If you're planning on mixing alcohol/gasoline you have to buy an alcohol content test kit, you use it to measure the percent alcohol in your gas;

then once you know the percent alcohol, you look up what the stoich AFR is for that mixture; then you edit this into your tune;

then you have to make a calculation to see if your injectors can provide sufficient fuel at WOT at your max rpm (and if/when you have sufficient injectors, you have to make sure your fuel pump can deliver that amount of fuel);

then you have to make sure your PE table will provide a suitable high load AFR (it probably already does);

then you have to edit the AFR equation/function for your wideband to account for the stoich AFR being different than 14.7 (you do have a wideband, don't you...?).

mOtOrHeAd MiKe

iTrader: (8)

http://www.hptuners.com/forum/showth...&highlight=E85