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Old 02-24-2008, 12:52 PM   #21
Dr. Flyview
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Join Date: May 2006
Location: Toronto
Posts: 4,401
Originally Posted by Mystikal View Post
Go ahead and try the 91, Mark likely advised you that because the mapping isn't aggressive enough to make 91 dangerous.

As for the ethanol itself, it's just not as efficient as gasoline.

Didn't you say you get less fuel economy with the ethanol? Basically I'm asking what are the reasons you stay away from it?

1998 BMW 328is - summer
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1992 BMW 325i - gone
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