Honda’s RBC intake manifold is popular for a reason. It’s a relatively simple and inexpensive bolt-on that yields impressive power gains. It's well optimized for relatively stock K-series engines, which means improving upon it isn’t easy. So when Skunk2 released its Pro Series Intake Manifold for K-series engines, the speculation as to whether or not it would outperform Honda’s RBC wasn’t surprising. Skunk2's goal was to design a manifold that would perform well on highly modified engines as well as stock ones. Although the RBC manifold performs well on relatively mild engines, once compression ratios, displacement, and cam timing are increased, its performance is extremely limited. Fortunately, the dyno doesn’t lie, and Skunk2 is happy to present the definitive results of nearly a year’s worth of testing. See the image gallery to the right for a sampling of dyno data and find out just how much better the Pro Series manifold fares against the RBC as well as Honda's RRC manifold.

For general information regarding Skunk2's Pro Series Intake Manifold, go here.