Single runner intake only benefits a turbo'd car. The point of the dual runner intake on NA is to keep torque up thru the powerband by routing air thru a shorter route for low rpm and longer route for higher rpm. That's what the VICS does and why you need it but VTCS is just for cold start emmissions and can be removed for quieter motor and a little better flow. VICS needs screws on butterflies red loctited so they don't come off and get sucked thru motor.