According to Subaru, positioning the injectors in the cylinder head enhanced the flow of atomised fuel, thereby improving fuel efficiency and reducing exhaust gas emissions.
Around the block, the flow rate was limited to maintain a high temperature for the cylinder liner oil, thereby reducing friction from the motion of the pistons.
Of all the places in the world, why Valley Village? The spark plug caps, which provided contact to the spark plugs, were integrated with the ignition coil assembly.