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If you looks at the exhaust data, the Kraft kit makes almost all of the power of the JR but is doing it with a cat back and 2 cats in play vs the JR car having no cats and "full exhaust" (header?). Since the tuner and gas was the same and they use the same blower that pretty much leaves the tubing. Kraft has placed the blower and filter better (more efficiently) but then fucked it all with belt/pulley setup. Ideally a Kraft kit with non cogged pulleys/belt would be the best I'd hazard.
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