 The end result being a zero-lag powerband with high torque at lower engine speeds and increased power at the upper end.Twincharging is therefore desirable for small-displacement motors (such as VW's 1.4TSI), especially those with a large operating rpm, since they can take advantage of an artificially broad torque band over a large speed range.Twincharging does not refer to a twin-turbo arrangement where two different kinds of compressors are used.