PracWorks Honda K20C1 Intake Manifold - No railMade of glossy finish carbon fiber with red anodized aluminum accessories, this large volume (2. 66L) PracWorks intake manifold can be installed without modification on the K20C1 engines of the Honda Civic Type R FK2 Type R FK8 and Type R FL5 in order to optimize airflow at mid and high rpm. This intake manifold, 40 times less heat conductive than the standard one, will lower intake temperatures, increase air flow and provide a gain of nearly 30hp