Flex Fuel vs Meth
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,052
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From: DFW TX
Flex Fuel vs Meth
So I'm kicking around the idea of removing the restrictor on my ecs kit, going to 10 psi and meth
Or maybe
Staying restricted and doing a flex fuel kit.
Anyone have any experience with a boosted car with flex fuel without meth injection?
Any pros and cons anyone can share?
Or maybe
Staying restricted and doing a flex fuel kit.
Anyone have any experience with a boosted car with flex fuel without meth injection?
Any pros and cons anyone can share?
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Even with 140# injectors, new rails, and an LT4 fuel pump, you'll probably run into fueling issues... Would (most likely) need one of the custom fuel systems that vendors are rolling out here.
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Last edited by Theta; Apr 29, 2015 at 10:45 PM.
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
Yea that's kinda what I figured. For some reason I am just somewhat apprehensive on going to 10psi and meth. I know it's pretty tried and true, but the flex fuel concept is intriguing.
Theta are you setup for 100% meth or a 50/50 setup?
Theta are you setup for 100% meth or a 50/50 setup?
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Really depends on the load level - I can go two tanks of fuel per fill, or two fills per tank. Just depends what sort of driving I'm doing.
WOT pulls with dual nozzles gobble it up pretty quickly!
I would average my use at 1 gallon per tank of fuel.
WOT pulls with dual nozzles gobble it up pretty quickly!
I would average my use at 1 gallon per tank of fuel.
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
Ok. That's fair. I'd assume a little better average for me then. Mine would be a single setup in the high 600 to low 700 power range.
Pro
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Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Oh, just a warning on that note for everyone - when my 'low fluid' warning comes up, it literally disappears after a few seconds and does not repeat the warning.
Something to remember for those of you depending on methanol to not go boom.
Looking into another auxiliary sensor to use to alert me, as I've nearly missed those twice now (and I pay very close attention to the instruments).
Something to remember for those of you depending on methanol to not go boom.
Looking into another auxiliary sensor to use to alert me, as I've nearly missed those twice now (and I pay very close attention to the instruments).
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,052
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From: DFW TX
Theta where does the level sensor get installed at? I would assume it would be a binary leval switch installed in the reservoir? The contact should make or break and stay there once it gets below a certain level?? What have you found out about it? Why just momentary?
Oh, just a warning on that note for everyone - when my 'low fluid' warning comes up, it literally disappears after a few seconds and does not repeat the warning.
Something to remember for those of you depending on methanol to not go boom.
Looking into another auxiliary sensor to use to alert me, as I've nearly missed those twice now (and I pay very close attention to the instruments).
Something to remember for those of you depending on methanol to not go boom.
Looking into another auxiliary sensor to use to alert me, as I've nearly missed those twice now (and I pay very close attention to the instruments).
Pro
Joined: Nov 2014
Posts: 687
Likes: 83
From: Fort Worth Texas
Another auxiliary sensor would be great! Is there any company out there that offers a discrete digital LED band display that is not round in shape, instead of the common round "fuel" gauges offered by Snow Performance, AEM, Innovate or Autometer? Heck, even a series of 5 LED's to give the user an idea of their methanol levels. I just watched your results on the NPP exhaust servos Theta. Wow, incredible job! Looks like a meth sensor would easy compared to THAT! 
Advanced
Joined: Dec 2014
Posts: 71
Likes: 2
From: Edinburg Texas
Not sure what kind of kits everyone is running, but on my 03 silverado, for some reason did not come with a low level indicator. Running a ALKY system and Julio sent me a low level sensor wired to a small led to let me know when the system is low on meth instead of relying on the stock low level sensor.
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,052
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From: DFW TX
I bet the gas mileage would be awful.. Haha.
What kind of gas mileage do you get on full e85?
Drifting
Joined: Mar 2011
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From: Indy
about 14 city, 25 highway, but that's only if i'm ***** footing it
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,052
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From: DFW TX
Tech Contributor
Joined: Jan 2006
Posts: 4,761
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From: Saint Louis MO
St. Jude Donor '14-'15
And here is the schematic for the wiring to the sensor. The continuity of the circuit depends on fluid being present at the sensor level.
When the fluid is depleted past that level, the circuit is opened, and the logic circuit alerts the cluster (DIC) to show the warning.
However, in my experience, it only shows it once, and briefly at that.
I will look into something to retrofit the sensor and circuits we already have.
When the fluid is depleted past that level, the circuit is opened, and the logic circuit alerts the cluster (DIC) to show the warning.
However, in my experience, it only shows it once, and briefly at that.
I will look into something to retrofit the sensor and circuits we already have.
Thread Starter
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
Theta think it's possible that the motion of the car causes the fluid to make and break the level sensor over and over and the computer might just filter out quick state changes.