BorgWarner EFR 8374 Turbo EFR 8374 is engineered to support big power levels yet spool fast enough for professional time attack teams. The 74mm Gamma-Ti turbine wheel is the optimal match for the 62.6mm inducer / 83mm exducer FMW compressor wheel and is capable of 79lb/min airflow and 45+psi boost. This is one of the most exciting turbos in the EFR lineup for the high-power addicts. This turbo has the largest EFR compressor housing and is ideal for use in single turbo applications for the 500-800hp range, or as twin turbo applications >1400+hp. Ceramic Ball Bearing only, watercooling optional (recommended) Compressor Specifications Compressor Type: Forged-Milled Wheel (FMW) Extended Tip Compressor Wheel OD (exducer): 83mm Compressor Wheel Inducer: 62.6mm Max Flow Rate: 79 lb/min Built-in BOV: All EFR compressor housings incorporate an integrated BOV. Compressor Housing Connections: Inlet: 4" Ported Shroud Hose Coupler Outlet: 2.5" Hose Coupler w/ integrated Vband option Turbine Specifications Turbine Type: Low Inertia Gamma-Ti Turbine Wheel Turbine Wheel OD: 74mm Stainless Steel Sand cast Housing - The EFR 8374 is available in (3) different turbine housing configurations: 0.83 A/R T3 Single Scroll (Internal WG) - Part # 179258 (SPECIAL ORDER) 0.92 A/R T4 Twin Scroll (Internal WG)- Part # 179357 (SPECIAL ORDER) 1.05 A/R T4 Twin scroll (external WG)- Part # 179393 (IN STOCK NOW!) Turbine outlet: GT-Vband (aka small 3" vband) ~92mm OD for all EFR turbos Features Dual Row Ceramic Ball Bearings - lowest friction and fastest spool/response, most extreme durability, built-in oil control orifice - (aka oil restrictor) **no restrictor can be used with EFR turbos Watercooled Center Section - watercooling is recommended, 14mm banjo bolts Double seals on both turbine and compressor end for extreme durability and resistance to any oil seepage Boost Control Solenoid Valve Integrated to Compressor Housing Integrated Speed Sensor mounting provisions