What's the deal with the BCP x500 turbo? Not many reviews

x500 turboBetween the spool time and power potential, you really can’t beat this turbo! The BCP X500R Turbocharger will support over 600whp with proper supporting mods. With a stock inlet size, itFitment Information: 2002-2014 Subaru WRX 2004-2021 Subaru STI *Only fits vehicles with EJ based engines. Features: Boost Controlled Performance set out to desn the BCP X500R