Throttle Body Guide Air Apparent 013
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Throttle Body Test—Kenne Bell Supercharged 4.6L 3V The third test run on the supercharged Three-Valve motor was to perform the throttle body upgrade at 20 psi. Equipped with the stock throttle body, the Three-Valve produced 621 hp at a peak boost reading of 19.4 psi. After the Stage 1 upgrade, the boost jumped to 22.0 psi, and the power output shot up to 682 hp. (up 61 hp). View Related Article
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