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Stage 4 400
and also saves weight
The PLM 3-way catalytic converter is the perfect balance of improved performance gains and reduced emissions
*Exact Product may vary from picture shown
it was built with single turbo setups in mind
Hybrid Racing Cold Air Intake System (06-11 Civic Si) BK14 Stage 4 400Big 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
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