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Old 07-24-2008, 12:24 PM   #83 (permalink)
Z man
Boxy is Sexy
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Join Date: May 2008
Location: WV
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xBox - '05 Scion xB
90 day: 40.85 mpg (US)
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Originally Posted by xbUser View Post
Sounds like you are driving at optimal speed (<60mph) this tank.

Per ROFL Box, driving <3000rpm (<60mph on 5th) saves most gas. That means, if I want to drive more efficiently with higher speed, either I need to change the ECU, or, more simple way, change a set of taller tires.
Well they say, and especially with a box, that the faster you go the more you are just using gas to push air. So 60mph sounds like a good top speed for any road to me. And having an automatic, the RPMS are lower once I hit the final gear. (approx. 30mph - 1,000rpm, 48mph - 2,000rpm) So that could help!

Last edited by Z man; 07-24-2008 at 03:49 PM..
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