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1. Externally, the supercharger is a unique design not normally seen when compared to other aftermarket systems. With the latest generation Eaton Twin Vortices System (TVS) roots-type rotor pack, its internals are exactly the top-of-the-line components we would expect from TRD. The twin four-lobe rotors feature a 160-degree twist, improving air handling, noise, and vibration characteristics for a smooth and linear application of power from the 81⁄2 psi they supply.