Mitsubishi Lancer Evolution Forum banner
1 - 20 of 70 Posts

·
Registered
Joined
·
3,179 Posts
Discussion Starter · #1 ·
I was talking to someone this week about the flex fuel vehicles by GM and found something interesting. This particular person owned a Buick. They informed me that with flex fuel they can add either E85 or regular gas to the car at any point in time and drive. There are sensors that measure the ratio of E85 to gasoline and make the proper adjustments to run the engine. This guy knows nothing about cars. This buick isnt modded and tuned up. Typical old financial guy that probably read this info somewhere.

I'm curious if this is actually true and if anyone has adapted the sensors to work with our car. I see these threads where people tune for E85 and can put nothing but a full tank of E85 in their car. If they want to use regular gas they have to empty the tank and retune the car. Thats just too much work for any sane person. According to this flex fuel info you can fill the gas anytime with either fuel and the sensors and ecu will adjust the engine.

Is this true?
How do we get it?
Also did anyone hear in the news that Exxon or one of the other big gas companies is investing a lot of money to farm algae? Supposedly it can be turned into fuel.
 
Joined
·
5,214 Posts
Yes the true Flex Fuel cars are actually Flex Fuel. Imagine that. ;)

The flex fuel mod for the evos on stock ECU are currently being worked on for evo 8 and 9.

Alot of us use the GM Flex Fuel sensors to measure the % of eth in our E85. Currently it only does that.

Some of the new Flex Fuel cars don't even have a Eth sensor, they do it off 02 sensor trim feedback.
 

·
Registered
Joined
·
1,624 Posts
This is true that they can fill either or at any time, my friends dad has a flex fuel capable Avalanche.
 

·
Registered
Joined
·
2,473 Posts
That's a really good question! I didn't know that either about the flex fuel vehicles. I assumed they could only run E85 "OR" regular unleaded as well. To not have to worry about switching tunes when you get low on gas is a nice change! I'm not tuned for it at the moment but I would be all over the chance if someone made a reliable product that will work in the Evo's.
 

·
Premium Member
Joined
·
11,756 Posts
Yes, this is true. But those sensor kits are $$$. They weren't as cheap as I'd imagined them to be.
 

·
Registered
Joined
·
10,007 Posts
would be cool if we had that!
 

·
Registered
Joined
·
381 Posts
would be cool if we had that!
I believe you can. They were looking to try it on an Evo X so I called but the quote was way to high. Maybe they got some other X to try it on. I know they have drag Hondas, supras and evo 8/9 on it if I'm not mistaken.
 

·
Registered
Joined
·
71 Posts
Adding flex-fuel capabilities to cars and trucks is just a way for car makers to skirt CAFE MPG requirements and gas-guzzler taxes. 99.99% of people who buy a flex-fuel capable car will never use it. Lucky for us, they have corn pumps in a few places because of it. :D
 

·
Registered
Joined
·
6,693 Posts
There are gas pumps that now let you select the % of ethanol you want for your flex fuel car. They say that ~40-50% is the best ratio for econ and $ per mile and power (in crappy stock flex fuel cars).
 

·
Registered
Joined
·
1,274 Posts
There are gas pumps that now let you select the % of ethanol you want for your flex fuel car. They say that ~40-50% is the best ratio for econ and $ per mile and power (in crappy stock flex fuel cars).
What gas stations have that? Just wondering if it will be out by us soon.

Also, how high or low can you go?
 

·
aka DolEvoX
Joined
·
1,554 Posts
But I thought E85 wasn't as good as gas in terms of MPGs?

Its definitely not. :mad:

Also, I belive having a true "flex fuel" vehicle defeats the purpose of filling up with E85, and E85 only.

By itself its 105 octane. Mixed with a particular amount of 93 gas it wont be. The flex fuel idea would make tuning an absolute nightmare and detonation would certainly be present if you were tuned for E85 and had a majority gasoline mix during spirited driving.

There are test kits for E85 out there if you are uncertain of its purity.
 

·
Registered
Joined
·
6,693 Posts
What gas stations have that? Just wondering if it will be out by us soon.

Also, how high or low can you go?
Not sure which stations, but they have the pumps in Sioux Falls, SD. That city has E85 on just about every street corner.
 
1 - 20 of 70 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top