Sexy hintern in Kansas City - FA20D Subaru Engine

As a result, the hydraulically-controlled camshaft could not respond to ECU signals.

Valve timing: D-AVCS To optimise valve overlap and utilise exhaust pulsation to enhance cylinder filling at high engine speeds, the FA20D engine had variable intake and exhaust valve timing, known as Subaru's 'Dual Active Valve Control System' D-AVCS.

Based on inputs from sensors, the ECM controlled the injection volume and timing of each type of fuel injector, according to engine load and engine speed, to optimise the fuel:air mixture for engine conditions.