improving the RRC

started working on the honda OEM rrc manifold. this manifold in stock form flows about 304CFM, 20CFM less than the skunk2 manifold, which is the highest flow numbers manifold.

got about 340CFM, 16CFM more than the skunk2.

now i need to weld the new plenum, which has more volumen. this manifold is designed for a 2.4L engine.