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Old 12-06-2007, 10:06 PM   #10 (permalink)
Depends on the Day
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This varies widely among vehicle manufacturers, but you may want to actually warming-up the incoming air.

I'm not sure about Jeeps or Chrysler brands, but Saturns and some Hondas respond to this.

Same for cold starts -- intake air temp is generally one of the feedback parameters for the FI system. Generally, warmer = more efficient.

As far as mud, it depends on how thick the coating is


Originally Posted by DifferentPointofView View Post
I always drive economically, especially when no one is looking. I can't really drop any weight, I could dump the spare, but you never know with the Jeep (the side of the road seems to be more interesting than the road itself!) I've got the tires about 1.5psi overinflated and removed the roof racks. I was wondering about making a home-made intake from pvc and the cold air intake filter with some heat deflectors to try and make it breath a little better. How much difference in mpg is a clean Jeep vs a Muddy one?
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