Going lean on wot on e-85
I've also been using Ethanol for over seven years, also have shown proof that all that horsepoo internet slander about Ethanol is mostly BS.
It's a great fuel for us car enthusiasts. Either you believe the internet smear campaigns or you use it and enjoy it without issue.
Last edited by razorlab; Apr 17, 2015 at 09:21 AM.
Newbie
Joined: Apr 2014
Posts: 88
Likes: 10
From: Boynton Beach, FL
I just started having the same problem with my evo X. Got tuned on e85 running id1000 injectors with AEM 320 pump a month ago. The car ran perfect for a month with solid 11.9-12.0 AFRs. Last week I did a roll race event and raced the car hard and while on the track everything was perfect. Driving home I did a pull and hit some type of hard cut (boost or fuel?) Afrs jumped to 14+ during the cut and went back to 12 when the car would resume. Now the car is running a full point lean ~13.0 in boost, my wideband (AEM) reads normal during idle and normal driving. I swapped relays to a newer Panasonic one from Mitsubishi with no improvement and was tuned on an updated OMRON relay.
What else could it be? Injectors have 5k miles of e85 through them. Pump and fuel sock are 1 month old. I tried a fresh tank of e85 from my regular station with no improvement. I would like to exhaust all options before saying tune. Any advise is appreciated!
What else could it be? Injectors have 5k miles of e85 through them. Pump and fuel sock are 1 month old. I tried a fresh tank of e85 from my regular station with no improvement. I would like to exhaust all options before saying tune. Any advise is appreciated!
Ethanol may contain 1/3 less energy density (-) 
but:
E-85 made 70 to 80 more WHP then when tuned with 91 oct petrol (+)
E-85 made 50 to 60 more WHP then when tuned with 100 oct petrol (+)
Oil didn't turn black with carbon as with running straight petrol. (+)
WW rear bumber stayed cleaner longer then with petrol. (+)
Spark plugs stayed cleaner then with running straight petrol. (+)
Piston tops have less carbon build up then with straight petrol. (+)
Cost of running E-85 @ ($2.29) is cheaper then with 100 oct petrol @ ($8.00) a gallon. (+)
Car ran cooler exhaust gas temps then with petrol. (+)
E-85 is > 2/3's a renewable resource. (+)
but:
E-85 made 70 to 80 more WHP then when tuned with 91 oct petrol (+)
E-85 made 50 to 60 more WHP then when tuned with 100 oct petrol (+)
Oil didn't turn black with carbon as with running straight petrol. (+)
WW rear bumber stayed cleaner longer then with petrol. (+)
Spark plugs stayed cleaner then with running straight petrol. (+)
Piston tops have less carbon build up then with straight petrol. (+)
Cost of running E-85 @ ($2.29) is cheaper then with 100 oct petrol @ ($8.00) a gallon. (+)
Car ran cooler exhaust gas temps then with petrol. (+)
E-85 is > 2/3's a renewable resource. (+)
Last edited by whtrice; Apr 18, 2015 at 02:02 PM.
Newbie
Joined: Oct 2013
Posts: 71
Likes: 0
From: sweden
Ethanol may contain 1/3 less energy density (-)
but:
E-85 made 70 to 80 more WHP then when tuned with 91 oct petrol (+)
E-85 made 50 to 60 more WHP then when tuned with 100 oct petrol (+)
Oil didn't turn black with carbon as with running straight petrol. (+)
WW rear bumber stayed cleaner longer then with petrol. (+)
Spark plugs stayed cleaner then with running straight petrol. (+)
Piston tops have less carbon build up then with straight petrol. (+)
Cost of running E-85 @ ($2.29) is cheaper then with 100 oct petrol @ ($8.00) a gallon. (+)
Car ran cooler exhaust gas temps then with petrol. (+)
E-85 is > 2/3's a renewable resource. (+)
but:
E-85 made 70 to 80 more WHP then when tuned with 91 oct petrol (+)
E-85 made 50 to 60 more WHP then when tuned with 100 oct petrol (+)
Oil didn't turn black with carbon as with running straight petrol. (+)
WW rear bumber stayed cleaner longer then with petrol. (+)
Spark plugs stayed cleaner then with running straight petrol. (+)
Piston tops have less carbon build up then with straight petrol. (+)
Cost of running E-85 @ ($2.29) is cheaper then with 100 oct petrol @ ($8.00) a gallon. (+)
Car ran cooler exhaust gas temps then with petrol. (+)
E-85 is > 2/3's a renewable resource. (+)
Most of it is true. And i like e85 too. If it is e85. Dont want e65. On your side of the pond the gas is of lesser quality, it just contains more dirt and sulfer.
Again. Until the e85 has stabilized as true e85 i stay with clean gas. 98 octane gas and e85 is same price here mpg.
My e85 engine ran great, no issues other that me being fakd on ethanol content every time i filled my tank. My ethanol sensor never was above 81% unless i mage the stuff myself, the sulfer content also dropped about 1%.
Everytime the ethanol content is 80% here all the guys hordes fuel like crazy. Its much better not to reward the manufactures for doing this, fake e85 will become true e85 much faster if people demands a prober quality like i do.
Most of it is true. And i like e85 too. If it is e85. Dont want e65. On your side of the pond the gas is of lesser quality, it just contains more dirt and sulfer.
Again. Until the e85 has stabilized as true e85 i stay with clean gas. 98 octane gas and e85 is same price here mpg.
My e85 engine ran great, no issues other that me being fakd on ethanol content every time i filled my tank. My ethanol sensor never was above 81% unless i mage the stuff myself, the sulfer content also dropped about 1%.
Everytime the ethanol content is 80% here all the guys hordes fuel like crazy. Its much better not to reward the manufactures for doing this, fake e85 will become true e85 much faster if people demands a prober quality like i do.
Again. Until the e85 has stabilized as true e85 i stay with clean gas. 98 octane gas and e85 is same price here mpg.
My e85 engine ran great, no issues other that me being fakd on ethanol content every time i filled my tank. My ethanol sensor never was above 81% unless i mage the stuff myself, the sulfer content also dropped about 1%.
Everytime the ethanol content is 80% here all the guys hordes fuel like crazy. Its much better not to reward the manufactures for doing this, fake e85 will become true e85 much faster if people demands a prober quality like i do.
Yes when California started selling E-85 at the pump around 2009 there were some quality issues.Consumers became more educated and have "called out" poor quality stations and reported them. Haven't noticed any sulfer contamination here. Most know our E-85 supply should be clear in color and how to check for % content of ethanol. We are also lucky here in California that we do not change to a seasonal fuel for E-85 like our gasoline does.
Newbie
Joined: Oct 2013
Posts: 71
Likes: 0
From: sweden
I live in southern sweden. here they put 10% n-heptane in the gas and e85 for cold star properties 
In the winter "e85" is e60 or e65 with 10% n-heptane.
A good reason for the e85 in calif is the crappy 91octan law.
In the winter "e85" is e60 or e65 with 10% n-heptane.A good reason for the e85 in calif is the crappy 91octan law.
Currently E85 is at E77-E79 here in some of the California stations. Tuned appropriately, it is no issue.
You need to check Fuel pressure when going lean.. might be dropping due to rubber fuel lines inside the tank going bad with the use of alcohol, also check alt voltages at high load high rpms
EvoM Guru
iTrader: (50)
Joined: Mar 2006
Posts: 9,675
Likes: 132
From: Tri-Cities, WA // Portland, OR
The fuel lines or any other rubber components in the stock Evo fuel system do not go bad from running E85, at least for E85 available in the USA.
He stated he was using a double pumper.. there is a Y hose in those kits that might be an issue.. measuring the fuel pressure ratio would be the best bet.. also the intake fuel filter can get clogged..
cheers
cheers
Going lean on wot on e-85
Originally Posted by kartectuning
He stated he was using a double pumper.. there is a Y hose in those kits that might be an issue.. measuring the fuel pressure ratio would be the best bet.. also the intake fuel filter can get clogged..
cheers
cheers
Last edited by letsgetthisdone; Jul 16, 2015 at 10:05 PM.
Thread
Thread Starter
Forum
Replies
Last Post
