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Old 07-12-2005, 10:47 PM   #22
hwy61
Scooby Specialist
 
Member#: 87950
Join Date: May 2005
Location: B,ham AL
Vehicle:
2005 STI
Gone....Somewhere in MS

Default

Since the cruise control won't engage until the vehicle speed reaches 25 mph anything under that is ruled out. The faster you go the more resistance in everything, tires, wind, engine friction, transmission friction, etc. The more resistance, the less mpg. So I suggest 25 mph in the lowest numerical gear ratio the engine will smoothly move the car. Lugging along with the engine struggling to keep up a 25 mph speed probably isn't as good as a gear where the engine can move the car steadily and w/out extreme effort.

Just stick me in the gear head, know it all section, my wife does. hwy61
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