so true... 
e85
Thread Starter
TECH Apprentice
Joined: Nov 2010
Posts: 307
Likes: 0
From: bear,delaware
e85 how well do our cars react to e85 is it the same performane as high test . Does it affect the timing at all or kr* will the superchips programmer have a proplem with e85 , the reason i ask is high test is 3.21 and e85 is 2.43 big difference in price
E85 is to be used in FLEX fuel cars only. If your car is NOT labled FLEX fuel, and did not come from factory with a yellow gas cap marked flex fuel, I would NOT use it. Otherwise, it is supposed to have a higher octane and provide more potential for power, but will get less mpg. The lower mpg is more then offset by the lower prices you mentioned though.
TECH Enthusiast
Joined: Oct 2008
Posts: 593
Likes: 0
From: Rochester, NY
The recommended fuel for our cars is 91 unleaded gasoline or greater. I would not under any circumstances put e85 in your vehicle. There is a member here running e85 (rossko?), but his vehicle is incredibly modified and tuned for that ability. Perhaps he can chime in and answer your question with more detail.
the bare minimum you need to run E85 is bigger injectors and a tune. But no you cannot just pump E85 in the tank and go.
It's 105 octane, you get the extra power from the octane and the cooling effect of the ethanol. You can expect about 10-20 hp/tq properly converted.
It's 105 octane, you get the extra power from the octane and the cooling effect of the ethanol. You can expect about 10-20 hp/tq properly converted.
No LS4 came from the factory E85-ready. As mentioned above, your car is not setup for it. In addition to the appropriate tuning, you don't have a lambda sensor or the correct fuel lines and fittings. If you tried to use it, your car wouldn't run right, and if you continued to use it, it will eventually eat parts of your fuel system.
As you're beginning to learn, there are no free lunches in the LS4 world.
As you're beginning to learn, there are no free lunches in the LS4 world.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
A lot of newer cars are can run e85 100% stock.
My 06 silverado 5.3 can run e85 just by pumping it into the tank. No yellow fill cap.
03 tahoe 5.3 i just worked on is a flex vehicle as well.
My 06 silverado 5.3 can run e85 just by pumping it into the tank. No yellow fill cap.
03 tahoe 5.3 i just worked on is a flex vehicle as well.
Teching In
Joined: Jun 2010
Posts: 37
Likes: 0
E85 in a car not designed to use it will cause, at best, a no-run situation, and at worst a fatally lean condition.
AvGas (even LL) is a bad idea in anything with an oxygen sensor or catalytic converters, since even "low lead" has more lead in it than the leaded gas of the late 60's, and will quickly kill both the sensors and cats.
AvGas (even LL) is a bad idea in anything with an oxygen sensor or catalytic converters, since even "low lead" has more lead in it than the leaded gas of the late 60's, and will quickly kill both the sensors and cats.
No LS4 came from the factory E85-ready. As mentioned above, your car is not setup for it. In addition to the appropriate tuning, you don't have a lambda sensor or the correct fuel lines and fittings. If you tried to use it, your car wouldn't run right, and if you continued to use it, it will eventually eat parts of your fuel system.
As you're beginning to learn, there are no free lunches in the LS4 world.
As you're beginning to learn, there are no free lunches in the LS4 world.
Just to clarify, if you convert to and only run E85, there is no reason for an extra sensor, the stock O2 will work just fine for that. However, if you plan to run flex fuel then you need an "alcohol" sensor, which would require a computer properly setup for that but that's a whole different story.
I'm sorry I don't know what you mean by a lambda sensor? Is it like an alcohol sensor? I would assume by the name it would sense stoich for what ever fuel you are running.