MIT study - E85 and FI Motors - Good Read
#17
Evolved Member
iTrader: (41)
I bought one of these a few years back and use it every time I fill up.
http://www.ebay.com/itm/ETHANOL-ALCOHOL-GASOLINE-FUEL-TESTER-E10-E15-E85-BRIGGS-100023-795161-R12800-/251317491665?pt=LH_DefaultDomain_0&hash=item3a83b097d1
Personally I dont see the point in buying an ethanol content analyzer. The whole point of testing the ethanol content is to make sure it is the correct percentage prior to filling up the car. So unless there is some sort of logic built into it which is then interpreted by the ecu to compensate fuel, timing and boost levels accordingly it really doesnt serve a purpose.
http://www.ebay.com/itm/ETHANOL-ALCOHOL-GASOLINE-FUEL-TESTER-E10-E15-E85-BRIGGS-100023-795161-R12800-/251317491665?pt=LH_DefaultDomain_0&hash=item3a83b097d1
Personally I dont see the point in buying an ethanol content analyzer. The whole point of testing the ethanol content is to make sure it is the correct percentage prior to filling up the car. So unless there is some sort of logic built into it which is then interpreted by the ecu to compensate fuel, timing and boost levels accordingly it really doesnt serve a purpose.
#18
EvoM Community Team Leader
iTrader: (60)
Personally I dont see the point in buying an ethanol content analyzer. The whole point of testing the ethanol content is to make sure it is the correct percentage prior to filling up the car. So unless there is some sort of logic built into it which is then interpreted by the ecu to compensate fuel, timing and boost levels accordingly it really doesnt serve a purpose.
#19
Evolved Member
iTrader: (41)
There are a couple aftermarket ecu's that have flexfuel capabilities. I know Pro EFI makes one and I think the new AEM V2 has the ability. Im sure there are many others as well.
But to my point, unless there is some sort of logic built into the system having a gauge tell you that what you just pumped was e50 doesnt really serve a purpose in terms of safety as its already in your fuel tank so its too late.
That's why I test it prior to every fill up and if its not where I want the content to be then I dont pump it into my car.
But to my point, unless there is some sort of logic built into the system having a gauge tell you that what you just pumped was e50 doesnt really serve a purpose in terms of safety as its already in your fuel tank so its too late.
That's why I test it prior to every fill up and if its not where I want the content to be then I dont pump it into my car.
#22
EvoM Community Team Leader
iTrader: (60)
my town only has one pump anyway, so not like i could try another station if i were unhappy with it.
i'm sure it's not as dramatic as people are making it seem.. but with my setup, i'd only be looking at about another 40-50whp anyway. just not worth it for me. not to say i wouldn't mind doing a tune and seeing what it would do. i bet i could reach 430-440whp.
#24
Direct injection and fuel injected are different. Direct injection actually sprays the fuel into the cylinders much like a diesel motor and helps cool the charge better (stated in the article).
What does this mean? I have a feeling on a 4G63 motor, E85 would have much higher %'s and knock resistance compared to regular fuel.
#25
Evolved Member
iTrader: (41)
LOL. i can imagine. "wtf is this guy doin??". i used to go crazy for power.. but now i just like to keep things simple. e85 adds what seems to be a variable that is just too unpredictable. you don't know which "blend" you are getting, i keep reading about weird things with the oil, etc.
my town only has one pump anyway, so not like i could try another station if i were unhappy with it.
i'm sure it's not as dramatic as people are making it seem.. but with my setup, i'd only be looking at about another 40-50whp anyway. just not worth it for me. not to say i wouldn't mind doing a tune and seeing what it would do. i bet i could reach 430-440whp.
my town only has one pump anyway, so not like i could try another station if i were unhappy with it.
i'm sure it's not as dramatic as people are making it seem.. but with my setup, i'd only be looking at about another 40-50whp anyway. just not worth it for me. not to say i wouldn't mind doing a tune and seeing what it would do. i bet i could reach 430-440whp.
Once it goes back up to 85% we will tweak the tune again. Now I know I am an extreme case and am fortunate to have a good connection but I'd venture a guess that if you have a solid tune that isnt on the ragged edge a fluctuation from 77-82 wouldn't make much of a difference.
Direct injection and fuel injected are different. Direct injection actually sprays the fuel into the cylinders much like a diesel motor and helps cool the charge better (stated in the article).
What does this mean? I have a feeling on a 4G63 motor, E85 would have much higher %'s and knock resistance compared to regular fuel.
What does this mean? I have a feeling on a 4G63 motor, E85 would have much higher %'s and knock resistance compared to regular fuel.
#26
EvoM Community Team Leader
iTrader: (60)
Direct injection and fuel injected are different. Direct injection actually sprays the fuel into the cylinders much like a diesel motor and helps cool the charge better (stated in the article).
What does this mean? I have a feeling on a 4G63 motor, E85 would have much higher %'s and knock resistance compared to regular fuel.
What does this mean? I have a feeling on a 4G63 motor, E85 would have much higher %'s and knock resistance compared to regular fuel.
#27
You're right, in the article it was referring to FI and forced induction. I was letting people know the tests were done on a direct injection motor though. Timing, a/f ratio's, and knock are going to vary from a regular motor.
#29
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