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It's made out of phenolic material that is supposed to separate/isolated the blower from the plenum to reduce heat transfer. And it increases the plenum volume. It didn't make much of a difference that I saw other than the intake tube rubbed the hood.
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Forged LS3 416ci, Maggie TVS2300 @ 13lbs boost, McCleod twin disc clutch, GForce 1320 nine-inch 389 gear ratio, Hurst line-lock, 750 whp 700 wtq |