Quote:
Originally Posted by Z man
I had a good amount of freeway but most of the roads are hilly 45mph roads.
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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.