Flex fuel on ls1 f body
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10 Second Club
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From: Northwest side of Chicago
Flex fuel on ls1 f body Im really wanting to safely run more than 10psi on pump gas. Im debating meth or e85. My perfect world situation would be a flex fuel option. I drive the car on long trips some times and don't want to worry about not finding e85.
Has any one done flex fuel using the stock ls1 computer?
Has any one done flex fuel using the stock ls1 computer?
TECH Resident
Joined: Jan 2011
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From: Tulsa
That I know of, no. The only stock ECU that I can think of can do flex fuel is the EVO one. I know that some GM vehicles are flex fuel but I don't know of the LS1 ECU will support it. I bet that with some tweaking it could though.
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From: Joliet,IL and Las Vegas 50/50
Im really wanting to safely run more than 10psi on pump gas. Im debating meth or e85. My perfect world situation would be a flex fuel option. I drive the car on long trips some times and don't want to worry about not finding e85.
Has any one done flex fuel using the stock ls1 computer?
Has any one done flex fuel using the stock ls1 computer?
TECH Resident
Joined: Jan 2011
Posts: 934
Likes: 0
From: Tulsa
oh i know, but the cheapest alternative to this problem would be to load two separate tunes depending on what fuel is in the tank.
he would also need to have the fuel sensor be able to determine how much eth percent is in the fuel line as well.
as far as using the STOCK PCM, nope.
would have to us a newer PCM
he would also need to have the fuel sensor be able to determine how much eth percent is in the fuel line as well.
as far as using the STOCK PCM, nope.
would have to us a newer PCM
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From: Joliet,IL and Las Vegas 50/50
oh i know, but the cheapest alternative to this problem would be to load two separate tunes depending on what fuel is in the tank.
he would also need to have the fuel sensor be able to determine how much eth percent is in the fuel line as well.
as far as using the STOCK PCM, nope.
would have to us a newer PCM
he would also need to have the fuel sensor be able to determine how much eth percent is in the fuel line as well.
as far as using the STOCK PCM, nope.
would have to us a newer PCM
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I know Max Mitchell/skinnies did some testing with using a Hobbs switch and a 2nd PCM/tank to on the fly switch fuels. I'm sure with the addition of a flex fuel sensor and compatable PCM you could possibly just flip a switch to whichever sort if fuel you want to do. I do know frost has the dual tune pcm's but idk if you can incorporate a flex fuel sensor with that.
@Compressor....would you mind sharing how this was accomplished? I really new to these platforms but the flex fuel capabilities of the ProEfi 128 unit I loved when dealing with the Supra world. Ideally I would like to setup my ssetup as flex fuel capable even if its not to the level of ProEfi.
Thanks in advance.
Thanks in advance.
9 Second Club
Joined: Nov 2003
Posts: 13,616
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From: Norn Iron
Im really wanting to safely run more than 10psi on pump gas. Im debating meth or e85. My perfect world situation would be a flex fuel option. I drive the car on long trips some times and don't want to worry about not finding e85.
Has any one done flex fuel using the stock ls1 computer?
Has any one done flex fuel using the stock ls1 computer?
What compression ration are you using ?
10psi is pretty low even for pump fuel, unless your CR is pretty high
An aftermarket ecu with proper flex fuel options would seem a bit overkill unless your engine build really does restrict you to such low boost with pump fuel.