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MarkRobinson MarkRobinson is offline
Architecture & Porsche's
 
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
Interesting. I tried 10 gallons a month ago with one gear higher: ie, always between 2700-3300rpm, both city & highway: my MPG dipped down to about 19. I was thinking that since engines are more efficient, maybe the efficiency over-rides the extra fuel needed to sustain the higher RPM, but appears to be invalid.

Normally, I'm low RPM & high vacuum.
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'89 Andial 951
'82 928R
'74 911 RSR 3.6
Old 06-07-2011, 02:24 PM
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