Our Sea-Doo 230/300 Intake Manifold Upgrade Kit enables your engine to produce more horsepower through increased boost pressure (+1 lb). Supplied hole saw & cutting fixture allow easy removal of restrictive screen element from inside of intake manifold. Special o-ringed, billet block-off plug fills opening left after removal of screen element. Includes detailed installation instructions. Key Features: Delivers increased boost pressure and performance. Includes hole saw and aluminum cutting fixture for easy installation. Billet aluminum block-off attaches with precision machined clamping system. Accepts OEM MAP/TEMP sensor. Features 1/8 NPT accessory port with block-off plug.