Skunk2 Ultra Series Intake Manifold - Silver 3.5L (Honda B-Series VTEC) The engineers at Skunk2 Racing have worked tirelessly to develop the next generation of high performance intake manifolds and are proud to announce the release of the much anticipated Ultra Series Intake Manifold.
The casting inside the ports are far from smooth. Large casting marks and rugged. For the amount of money you spend on their product it should have better porting. You must sand port and polish the ports. For the manifold to be affective in sfwd.