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Old 11-26-2010, 03:48 AM   #11 (permalink)
bestclimb
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Join Date: Oct 2009
Location: South Central AK
Posts: 933

escort - '99 ford escort sport
90 day: 42.38 mpg (US)

scoobaru - '02 Subaru Forester s
90 day: 28.65 mpg (US)
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Quote:
Originally Posted by alexofnazareth View Post
yeah, i wouldnt suggest running the car lean, cause youll burn the exhaust valves right up.
At high power settings this is true, but for low power cruising, it is not an issue. Calibrated manifold leaks are not a bad way to do lean burn actually, as when manifold pressure drops (high power settings with open throttle) the amount of unmetered air by % coming in drops significantly (close to 0).

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