BorgWarner engineers started with their 91S compressor wheel blade shape also found in the EFR9180, and then trimmed it down ~28% increasing the airflow rate to ~87lb/min. This all new wheel finds its home in the purpose built SX-E compressor housing featuring ported-shroud inlet and optional speed sensor port (great feature for serious racers/tuners). A legendary Airwerks 80mm Inconel turbine wheel and wide range of turbine housings make this the perfect turbo for any 450-850HP build.
The S366SX-E has a smaller overall size than the EFR9180 yet also has a higher airflow rate making this an excellent match for high-boost and high-power applications.