I don't think the metal shield will heat the air that much although it may transmit heat better than the plastic. The restriction of airflow is the biggest problem. When the car is moving the air inside the compartment tends to be a lot cooler than at idle. The demands of the engine at WOT are higher than the factory fender inlet can provide.
warmonger
You can call me anything you like as long as it's nice.(all lies accepted)
99 Silver Frost SVT. #226 of 2760
Engine: 3.0 power!
Unique Stuff: Sunroof control module (#1 of 9)
Car Audio: Loaded and loud!
Check them out at
http://home.earthlink.net/~twilson1726
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