A system for targeting an air-fuel mixture flow pattern within the intake port of an internal combustion engine is provided. The system includes a flow pattern control plate movably provided within the intake port. The plate includes at least one air-fuel mixture funneling opening. The opening is rounded and is preferably ovoid. Preferably there are two openings with one opening being larger than the other. The upstream side of the plate includes a sloped surface formed from its edge toward the openings, thus funneling the air-fuel mixture passing from the upstream side, through the plate, and to the downstream side. The size, shape and number of openings can be selectively adjusted thus making the system tunable. The intake port includes a sloped portion formed on its inner surface adjacent the flow pattern control plate to funnel the flow of the air-fuel mixture through the openings formed in the plate.