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Old 06-26-2009, 11:23 AM   #43 (permalink)
QuickLTD
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Join Date: Apr 2009
Location: Tampa, Florida
Posts: 188

Flying Brick - '96 Pontiac Bonneville SE
90 day: 23.57 mpg (US)
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Maybe it needed a bit of the upper open to push flow up from the lower grilles? Relieving exess stagnant air in the large void up there? Kind of like scavenging in an exhaust system? http://en.wikipedia.org/wiki/Scavenging_(automotive)
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1996 Pontiac Bonneville SE 3.8L V6
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