The Stainless Steel will work better than stock valves because the backside of the valve is swirl polished. In this case it is like a cheap port job. It helps the air to have a smooth boundry layer with which to flow into the head.
Title: The Stainless Steel will work better than stock valves because the backside of the valve is swirl polished. In this case it is like a cheap port job. It helps the air to have a smooth boundry layer with which to flow into the head.
