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SVTPerformance's Chain of Restaurants
The Distillery
Running 91 & E85
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<blockquote data-quote="REX-RACER" data-source="post: 10234148" data-attributes="member: 14222"><p>The trick is to have a "switchable" tuning solution such as an XCal2/3 flash tuner or even a flip chip. I prefer to run the tank down to near empty, fill up, apply the appropriate tune and off I go. Some folks do figure out what percentage of fuel in the tank they can safely run the high octane tune but that just seems like too much work and unnecessary risk to me.</p><p></p><p> The thing you need to remember is that since the difference in octane is so great if you really tune for E85 you could never run 91 or even 93 safely on that tune. You can however do it in reverse, i.e; run E85 on a 91/93 tune, heck you could even E85 w/ an 87 tune but you'll be pig rich and get horrible mileage.</p></blockquote><p></p>
[QUOTE="REX-RACER, post: 10234148, member: 14222"] The trick is to have a "switchable" tuning solution such as an XCal2/3 flash tuner or even a flip chip. I prefer to run the tank down to near empty, fill up, apply the appropriate tune and off I go. Some folks do figure out what percentage of fuel in the tank they can safely run the high octane tune but that just seems like too much work and unnecessary risk to me. The thing you need to remember is that since the difference in octane is so great if you really tune for E85 you could never run 91 or even 93 safely on that tune. You can however do it in reverse, i.e; run E85 on a 91/93 tune, heck you could even E85 w/ an 87 tune but you'll be pig rich and get horrible mileage. [/QUOTE]
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SVTPerformance's Chain of Restaurants
The Distillery
Running 91 & E85
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