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You can feel the very hot air pouring out the hole in the hood around the air cleaner. The air is being forced out by the radiator fan. |
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The isolator seals off the hole in the hood to block the hot air. Should be good for some free horsepower. |
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This aluminum backed foam
board is used to insulate home exteriors. It weighs about zero
ounces - maybe less. I dressed the edges with some aluminum tape. Durability is still to be determined. |