2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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Old 07-23-20, 11:08 AM
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Fuel

Has anyone run E85 in their cars? I’m curious on how they will act
Old 07-23-20, 01:57 PM
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Dak
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I'm going to go out on a limb here and say No, not on the stock ECU. It can't compensate for the additional fuel requirements E85 would require. That said I'm sure there are people running standalone ECUs who have and do use E85. It is a topic of discussion I'm pretty sure in the engine management forums.
Old 07-23-20, 04:32 PM
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This topic has been discussed ad nauseam in the past. Here's an interesting link to one tread that I pulled up: https://www.rx7club.com/2nd-generati...rbo-fc-764262/
Old 07-23-20, 06:42 PM
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Don't run E85 on a stock ECU. Hell, even with a properly tuned aftermarket and the multitude of fuel system mods/replacements you'll need to make to run E85, corrosion problems with fuel tanks, lines, filters & rubber/plastic sealing components will be such a continuous PITA with E85 that it's not worth it IMHO.
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