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Old 01-12-2013, 07:48 AM   #10 (permalink)
suspectnumber961
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Join Date: Mar 2008
Location: I flitter here and there
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highcountryexplorer - '86 Nissan 720 KC 4x4 ST with fiberglass cap
90 day: 21.78 mpg (US)

Elroy - '03 Ford Focus ZX3 w/Zetec DOHC engine
90 day: 32.89 mpg (US)
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Made up 3 panels to fit to the grill opening using thin plywood with DIY spring clips mounted to the back. Painted flat black.

2 that cover about 1/3 of the opening and one that covers maybe 1/4 or so.

So as temps change I can cover from 1/4 to 1/2 to 2/3s of the remaining grill opening.

The idea being to get FWT temps up as soon as possible and keep them in the 200F to 210F range if possible while driving.
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