Question

In 1980, Alfa Romeo introduced the first _______ system to smooth a rough idle caused by ignition and camshaft timing changes.

Answer 1

In 1980, Alfa Romeo introduced the first valve-timing(needs precise timing, for piston valves) system to smooth a rough idle caused by ignition and camshaft timing changes.

Answer 2

In 1980, Alfa Romeo introduced the first Variable valve-timing system to smooth a rough idle caused by ignition and camshaft timing changes.