In order to understand this innovative step in motorsport, we have to take a look at the history of turbochargers.
The need for increasing performance of an internal combustion engine back in the 70s had as a result, forced induction(turbocharger) applications in F1 and Rallye.
Soon the racing teams realized that ECU management was not as sophisticated to manage temperatures and all the variables needed, as a result, the life of a forced induction engine was dramatically lower compared to a naturally aspirated engine.
Back to today, with the electronics revolution, both hardware and software paved the way for significantly improved ways of managing a more complicated turbocharged internal combustion engine.
The next step in the "race" for more horsepower and exponential improvement of efficiency is the hybrid solutions, ruled by the use of exotic materials, improved and precise machining gives us the opportunity to break the barrier of half a thousand horsepower from smaller displacement engines with hybrid turbo upgrade.
Great examples of those engines capable of achieving enormous horsepower are the hybrid turbo Golf R engine as well as the hybrid turbo MK7 GTI.
One of the first companies capable of moving towards hybrid turbo cars era was Volkswagen Group, with the introduction of hybrid turbo 1.4 TSI engine, gained an enormous advantage in markets who previously regulated engine displacement.
Their hybrid turbo cars achieved almost double the horsepower versus the competitors cars making them capable of further improvement by serious tuners all across the globe.
Other German automakers considered the use of innovative hybrid turbocharger, great example the Bavarian car manufacturer BMW, introducing the hybrid turbo B58 engine.