• The same turbo we use on our Beams 3SGE Turbo engine setup! This turbo has been absolutely fantastic and has served us well for more than 3 years! It comes on as low as 2000rpm and stays at 11psi all the way to 8000rpm!
• Straight from Garrett:
• G SERIES COMPRESSOR AERODYNAMICS FOR MAXIMUM HP
• 54mm TURBOCHARGER COMPRESSOR WHEEL
• 79% MAXIMUM COMPRESSOR EFFICIENCY
• MAR-M ALLOY TURBINE WHEEL RATED UP TO 1050° C
• NEW TURBINE AERO PROVIDES HIGHER FLOW AND EFFICIENCY
• STAINLESS STEEL TURBINE HOUSINGS RATED UP TO 1050° C
• OIL RESTRICTOR AND WATER FITTINGS INCLUDED
• FULLY MACHINED SPEED SENSOR AND PRESSURE PORTS
• TURBOCHARGER ASSEMBLIES ARE CALIBRATED WITH A 0.5 BAR ACTUATOR

https://www.garrettmotion.com/racing-and-performance/performance-catalog/turbo/g-series-g25-660/