ENGINE MANAGEMENT SYSTEM – V 18-2-42 DESCRIPTION AND OPERATION VCC System Introduction The variable intake valve timing system on the V is known as Variable Camshaft Control (VCC). The V VCC system is anew system providing stepless VCC functionality on each intake camshaft. The system is continuously variable within its range of adjustment providing optimised camshaft positioning for all engine operating conditions. While the engine is running, both intake camshafts are continuously adjusted to their optimum positions. This enhances engine performance and reduces exhaust emissions. Both camshafts are adjusted simultaneously within 20 ° (maximum) of the camshafts rotational axis.