The STS (Superior Turbine Strike) turbine wheel will take a shorter time (a 5-8% decrease) to build boost, achieve higher top-end speeds, and extend the choking area. This is because it has less inertia and restriction compared to an 11 or 12-blade STD turbine, and it also has more flow capacity. The STS 55 turbine wheel improve from STS, inspired by cutting-edge turbine aero, employs a patent-pending splitter-blade design to achieve unprecedented levels of flow capacity and efficiency. This translates to a significant reduction in exhaust manifold pressure (EMAP) by operating at a reduced expansion ratio, unlocking a multitude of performance benefits:
- Unleashed Engine Power: Reduced backpressure, a direct result of the lower expansion ratio, allows your engine to breathe freely, resulting in a substantial boost in horsepower and torque.
- Enhanced Volumetric Efficiency: Lower EMAP, achieved through optimized expansion, improves the engine's ability to ingest air and fuel, contributing to heightened responsiveness and overall efficiency.
- Reduced Knock Sensitivity: Lower EMAP mitigates the risk of detonation, permitting more aggressive tuning and further power extraction.
- Cooler Engine Operation: The optimized expansion ratio contributes to lower exhaust gas temperatures, alleviating thermal stress on your engine and enhancing reliability.
The STS 55's innovative splitter-blade design transcends the traditional trade-off between flow capacity and efficiency. By refining blade loading and minimizing blockage in the throat area, it achieves the high flow of a low blade-count turbine while maintaining the efficiency of a high blade-count configuration.
