Dont have a way to test the injectors as this has been sitting on a shelf for 8+ years. The product is an OEM intake manifold assembly for a 96-00 Honda Civic EX with a D16Y8 engine. Designed specifically by Honda, this intake manifold is a crucial component in the air and fuel delivery system of the car. Made to fit the Civic EX model, this part ensures proper functionality and performance for the vehicle. Whether you are looking to replace a malfunctioning manifold or upgrade to a genuine Honda part, this product is a reliable option for your Honda Civic.