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Old 06-18-2009, 06:17 PM   #5 (permalink)
EcoModding Apprentice
Join Date: Jun 2008
Location: Cambridge, ON
Posts: 240

Jalilah - '07 Chevrolet Cobalt LT
90 day: 40.57 mpg (US)
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If you really want to get hot air, can't you put a heat exchanger on the exhaust, and let the intake air flow over it before it enters the engine? at low load, i bet that would be very effective.

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