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Optimized block stiffness
“Formula” in the name is a nod to Honda’s racing heritage
Due to size constraints inside of the DC5 chassis
Honda altered the keeper groove angles
Hybrid Racing Cold Air Intake System (06-11 Civic Si) 2007-2008-Honda-Fit Optimized block stiffnessBig tube, big power! We spent countless hours designing, testing, and refining this design to ensure it was the absolute best intake available for the 8th Gen Civic Si platform. This intake is designed to make big gains on any setup, from totally stock to high lift cams and huge exhausts. Dyno graphs are provided to show the intake's effectiveness against its competitors, but for example, we saw 14hp peak gain and 9hp average gain against the stock
