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How much of a mess would I be getting myself into?

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How much of a mess would I be getting myself into?

Post #1 by RancheroBoy » Sun Jul 26, 2015 3:40 pm

I'm pondering starting a boosted 300 project, but it's out of the ordinary. Looking for 600rwhp and up on E85. I know I have to use megasquirt but I don't know a thing about it really. How hard would it be to get MS-II set up with Flex-Fuel? That would really be the only thing different from just normal MS-II that id want to do with it. Just started pondering the project, if it's mildly feasible to do then i'll probably dive in.
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Re: How much of a mess would I be getting myself into?

Post #2 by MECH_E » Mon Aug 03, 2015 12:53 pm

I've never messed with the table switching for flex fuel but I'm sure it not that bad to setup. If your confident enough to do a normal megasquirt build then adding in flex fuel shouldn't scare you enough to no do it. Pretty sure you can setup a gm flex-fuel sensor and never have to touch a thing, just fill up with whatever mixture of ethanol/gasoline you want.

I'm running e85 now and have plenty of e85-equipped stations around that I dont have to worry about a gasoline tune. However, it does limit my freedom to drive anywhere I want. e85 is much less prominent in the northern states, here in SC its quite common.

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Re: How much of a mess would I be getting myself into?

Post #3 by ToddT58 » Sat Nov 07, 2015 10:13 pm

Please keep us posted when you move forward on this.

I'm talking with a local race shop/engine builder about rebuilding my '95 4.9 specifically to run on E85 or E99.9 (home made) as well as woodgas running a gasifier in the bed of the truck. After months of searching, last week I found someone who built an engine for E85 but NOT for drag racing. The end result was good power and an 8% increase in mpg.

How tough was it to add a turbo, MECH_E? I understand that the higher octane of E85 just asks for boost in order to use all the power potential.

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Re: How much of a mess would I be getting myself into?

Post #4 by rbohm » Fri Nov 13, 2015 10:05 pm

the megasquirt can be set up with a flex fuel sensor, then it is a matter of setting your tables up properly. check out for more information. you can also check out the megasquirt forums as a few people there have done this very setup.
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