One of the main factors that influence an engine’s power characteristics is valve overlap. Valve overlap refers to the amount of crank rotation, measured in degrees, during which both the intake and exhaust valves are open at the same time. Overlap occurs at the end of the exhaust stroke and the beginning of the intake stroke, and the amount of overlap has a huge impact on an engine’s performance and character. (It’s significant enough that Ducati incorporated the figure into the name of the engine that powers the current Multistrada and Monster 1200, the Testastretta 11° DS.) More overlap produces more power at higher engine speeds by taking advantage of the inertia of fast-moving intake and exhaust gases. A large overlap figure is good for high-rpm operation, but inhibits midrange power and fuel economy at lower engine speeds. For low- and midrange power, less overlap is desired. DVT allows the valve overlap to be altered based on engine speed, eliminating the compromise that’s plagued engine designers for decades. It’s a beautifully simply system that should increase power and efficiency at all engine speeds.