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Old 07-30-2010, 07:16 PM   #6 (permalink)
ShadeTreeMech
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Join Date: Apr 2009
Location: Arkansas
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The Van - '97 Mercury Villager gs
90 day: 19.8 mpg (US)

Lyle the Kindly Viking - '99 Volvo V70
90 day: 25.82 mpg (US)
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I'd just start driving. A modern engine wil be ready for a load in the time it takes to put it in gear after starting. If you're worried about it much, just be easy on it for the first bit.

My car reads closed loop in a matter of about 30 seconds. Is your o2 sensor a wideband or narrowband? IIRC the wideband is a bit quicker to start reading.
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Quote:
Originally Posted by jamesqf View Post
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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