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Old 02-18-2011, 05:28 PM   #9 (permalink)
redneck
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Join Date: Jun 2009
Location: SC Lowcountry
Posts: 1,795

Geo XL1 - '94 Geo Metro
Team Metro
Boat tails and more mods
90 day: 72.22 mpg (US)

Big, Bad & Flat - '01 Dodge Ram 3500 SLT
Team Cummins
90 day: 21.13 mpg (US)
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I talked with a representative of Smart Truck today. I asked him the purpose of part C. He explained to me that part C was a rear diffusser and that the whole Under Tray System was designed to compress and tunnel the air. Thus speeding it up before entering the low pressure area. If you look closely at the bottom of part C you will notice a slight downward angle that helps with final compression.

I told him about this website so maybe he will chime in later.



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