So e85 on the LS1 good?
So e85 on the LS1 good? 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
Thanks
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TECH Fanatic
Joined: Mar 2011
Posts: 1,313
Likes: 10
From: Maryland
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
https://ls1tech.com/forums/fueling-i...r-ls1-e85.html
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e85 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
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
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
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...?).
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...?).
Joined: Mar 2007
Posts: 1,149
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From: Saskatchewan, Canada - where arguing "DA" is for the slow and weak...
