Exhaust and emissions The FA20D engine had a 4-2-1 exhaust manifold and dual tailpipe outlets.
To alter cam timing, the spool valve would be activated by the cam timing oil control valve assembly via a signal from the ECM and move to either the right to advance timing or the left to retard timing.
Intake and throttle The intake system for the and included a 'sound creator', damper and a thin rubber tube to transmit intake pulsations to the cabin.