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Extreme engine downsizing is a modern solution aimed towards the goal of meeting new emissions regulations for internal combustion engines. A higher percentage downsized engine will produce less CO2. By extension, a higher boost level is required to generate high engine torque performance. The transient load step of a higher boost system at low RPM is currently an issue for conventional boosting. Aeristech has developed an electric supercharger to be matched with a conventional turbocharger to create a new type of two stage boosting system and a simpler downsized gasoline engine usable in mainstream vehicle segments. Whereas most electric pressure charging devices are capable of transient output to alleviate turbo lag. The electric supercharger is capable of steady-state air delivery. This makes the electric supercharger a dual-function device, alleviating turbo lag and also supplementing the compressor map of the turbocharger or main boost device.