Join Date: May 2002
Location: New Braunfels TX
That really won't give you flex fuel capability, and being SD or MAF has nothing to do with what you have in mind.
Doing what you describe you'd also have to drain your tank and purge your lines every time you wanted to switch fuels.
If you want flex fuel you need to add an oxygen sensor to the fuel supply so it can measure exactly how much alcohol is in the fuel and then adjust your fuel delivery to compensate. A BAMA chip can't support that, you need a new ECU to do that.
A compromise would be to add a 2nd fuel tank just for E85. You would still need to purge lines which changing fuels but you wouldn't need to drain tanks, just turn valves to change your draw and return from one tank or the other. A BAMA chip could support this because it never needs to deal with some blend between the two fuels. But it's really important that you are anal about purging lines when switching fuels, you can't mix them or your tune is off.
Final thought, you won't make any more power on E85 than you will on pump gas without something like a turbocharger.
'94 GT, White, Cobra hood & bumper cover, '95R wheels
393w, Vic Jr 60cc, XE282HR, Victor 5.8 EFI, 80# injectors, Hooker LT 1 3/4 to 3", Borla proXS
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T56 w/ AJE xmember, McLeod street twin, MM/Bilstein '03 IRS, JRi Agent47 SLA