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Cobra Forums
The Terminator
Engine/Tuning
Converting to e85 on the returnless system.
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<blockquote data-quote="c6zhombre" data-source="post: 16202342" data-attributes="member: 76381"><p>If you're using the factory computer....the flex fuel sensor will only be for reading the content in the tank....the factory computer will not change the tune on the fly. So, if the ethanol content changes enough from your current tunes assumption of what it is....you're gong to need to manually drop in a new tune. </p><p></p><p>I'd rather just test pump side before product goes into the tank so you could swap tunes immediately before the car even fires back up. Fortunately for me, that's never an issue because the station I use is 85% or slightly greater year round, and year after year.</p><p></p><p>Regarding the pumps....I do not believe they are for returnless use, only return. </p><p></p><p>I have seen the gss342s work just fine in ethanol.....but they are not rated for ethanol whatsoever. So keep that in mind. Fore's website will tell you this as well.</p><p></p><p>You probably want to go with the improved supercar GT pumps (302s). They are rated for ethanol use. And they are specifically designed for returnless use and should work perfectly in your new Fore hat.</p></blockquote><p></p>
[QUOTE="c6zhombre, post: 16202342, member: 76381"] If you're using the factory computer....the flex fuel sensor will only be for reading the content in the tank....the factory computer will not change the tune on the fly. So, if the ethanol content changes enough from your current tunes assumption of what it is....you're gong to need to manually drop in a new tune. I'd rather just test pump side before product goes into the tank so you could swap tunes immediately before the car even fires back up. Fortunately for me, that's never an issue because the station I use is 85% or slightly greater year round, and year after year. Regarding the pumps....I do not believe they are for returnless use, only return. I have seen the gss342s work just fine in ethanol.....but they are not rated for ethanol whatsoever. So keep that in mind. Fore's website will tell you this as well. You probably want to go with the improved supercar GT pumps (302s). They are rated for ethanol use. And they are specifically designed for returnless use and should work perfectly in your new Fore hat. [/QUOTE]
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The Terminator
Engine/Tuning
Converting to e85 on the returnless system.
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