Increasing the power of your iron horse is always faced with a dilemma: the larger the turbine and power, the higher the output speeds for boost and longer spool. The output was invented a long time ago - this is a twin-turbo. The most effective, according to the scheme, implementation of the two-turbine system is Staged Compound Compressors. The potential of this scheme is such that it is calculated that it is possible to obtain a boost from idle to redline