This is the only time I've posted this as a non-advertisement. This is to show the difference of using a shield like was mentioned above. Of course the inadvertent advertising doesn't bother me.

Update*
The shield showed a 20F temp drop at the IAT sensor using the OBDII scanner.
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Here is the info that I have. Allthough the numbers aren't astronomical, they do prove that a shield will dramatically reduce heat soak. I have measured a 50 degree F difference from the outside of the heat shield to the other side of the shield at the filter (KKM). It definitely aids in blocking the air the fans will blow into the intake as well. Here are some numbers besides the temps.
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Pics are here: http://photos.yahoo.com/jc_aimhigher You can also see it on the NECO site: http://www.newcougar.org
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Chris A.'s car:
with the shield and hood closed: 164.0hp and 147.2lb/tq with the shield and hood open: 166.6hp and 147.8lb/tq
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Blake's car:
hmmm....hood open = 164.3 hp / 144.5 lb. ft. hood closed = 160.4 hp / 141.6 lb. ft.
Both of these cars were built in the same month. They are both silver SVTs.
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Shields are made on Saturday ready to ship on Monday. The price is $65.00 which includes shipping. You can pay with PayPal or check/MO/cash.
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PayPal, send payment to jc-aimhigher@webtv.net with the Subject: Miks Heat Shield. Include your email, name, shipping address and what type of car/engine combo.
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Or send payment to:
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John Miks
218 D Tyndall Ave
Colorado Springs, CO 80916
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If you have any questions at all, feel free to ask.
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John