k24 intake prototype

started working last week on the manifold for a 2.4l honda civic engine. i chose the rsp intake for its 3 piece
design, which is easier to work on.
the stock design  is focused on mid range power and torque gains, with longer runners than other honda factory intakes.
it flowed very poor,  less than a prb intake manifold. this poor behavior  is due to the plenum cover.

gained about 30CFM with a new design and working on the velocity stacks.

i'll swap the oem velocity stacks for these ones.

i am also trying to gain some flow on a stock prb intake.