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Old 03-19-2008, 05:37 PM   #21
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and the winner here is ....... the airdams

three tanks consistently over 30mpg without trying the screen netted 30+ but required all the hyper miler techniques. the airdams didn't.

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Old 03-19-2008, 08:12 PM   #22
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Air dam looks very nice.

I'm taping up the Focus' lower grill for a trip. We'll see how I do.

Thanks for the write up!

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Old 03-19-2008, 10:00 PM   #23
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I'm just curious if you tracked average temperature with those tanks? Seems to me like even a difference of 10 degrees could amount to a significant difference.

I think, therefore I doubt.
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Old 03-19-2008, 10:14 PM   #24
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Originally Posted by Scott View Post
With my new coming vehicle I plan on using a belly pan. What do you do with the exhaust? Do you cover the exhaust system with a pan and wrap it in heat wrap? Will it make the floor pan so hot the carpet will melt? Or do you build the belly pan up to it and leave it exposed? I also thought about puting cone shaped pieces like you would find at a Home Depot for chimney vents around the muffler for the aerodynamic bullet effect.
On my belly pan, the covering under the exhaust system is aluminum flashing. I designed it so there is an air flow running from the engine compartment through the enclosed exhaust tunnel to keep it cooled. Its been in place for almost 2 years without problems.
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Old 03-20-2008, 11:51 AM   #25
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Why not use both alu. screen and coroplast?

The aluminum screen is cheap, fireproof, breathable, and apparently pretty easy to install. Does not rattle or boom like sheetmetal. So, use it around the hot spots like mufflers and exhaust pipes, to let hot air be drawn out by Venturi effect. Also, being a superb heat conductor, it will very efficiently dissipate heat from any point of contact with a muffler, etc.. Even though porous, the screen will still go a long way to reduce improve form drag, i.e., streamline or smoothly cover otherwise gross aerodynamic shapes such as leading edges of mufflers, etc.. Porsche uses perforated screen as an engine cover on its latest high performance mid-engine car, the Carrera GT.

Coroplast everywhere else practicable.
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Old 04-28-2008, 12:56 AM   #26
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thank you for the pics.. lol

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