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Old 05-15-2010, 10:29 AM   #17
fasternyou929
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Join Date: Nov 2008
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It does more than recirculate the air (most systems have a separate control for that). Max A/C also runs the compressor and auxiliary engine cooling fan at a 100% duty cycle. Normal A/C runs both intermittently, you can probably hear/feel it when the A/C compressor clutch cycles, particularly if you're sitting idle.
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