Quote:
Originally Posted by kbogarto
So your tune lets the ecu adjust boost levels based on ethanol content in your gas? Is there a range it is set to operate in?
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The car was tuned for multiple ethanol levels as we added E85 into a tank that had 93 in it. But yes it adjusts things like timing and boost to compensate ethanol content levels. I'm running E77 at the moment and going to fill up later today to try to hit E85.
The range it operates in is anything from pure 93 octane pump gas to full blown E85. I believe it can handle up to E90 as well, but I'm not sure it'll ever see that. As you may already know, pump gas already contains 10% ethanol so that is what the computer is seeing and it thinks it's running E10. So I guess you could say the range is from E10-E90. I'm not sure what would happen if I ran pure gasoline with zero ethanol, but I'm sure it would be fine.