EFR 9174


EFR 9174 is the biggest, baddest, highest flowing turbo in the EFR family. Capable of a remarkable 94lb/min airflow and stable at very high boost levels.

SKU: N/A Category:


The EFR 9174?91mm OD compressor measures 67.7mm inducer and is a 7 blade FMW compressor. This turbo will redefine what 67mm turbos are capable of. After receiving requests from many high power enthusiasts and drag racers restrained to a 67mm inducer, there was a clear need for 1000hp capable turbos that still provide good spool and response. Using the high flowing 1.05 a/r Twinscroll T4 turbine housing is the most efficient way to run this as a single turbocharger. If twin turbos will be run, the .83 a/r or 1.05 a/r can be used, depending on manifolds and space constraints. Ideal for use as single turbo applications in the 700-1000hp per turbo range, or as very high power twin turbo applications >1000-1700+hp.

Compressor Specifications
Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
Compressor Wheel OD (exducer): 91mm
Compressor Wheel Inducer: 67.7mm
Max Flow Rate: 94 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 Investment cast Housing
The EFR 9180 is available in (4) different turbine housing configurations:
0.83 A/R T3 Undivided (Internal WG)
0.92 A/R T4 Twin Scroll (Internal WG)
1.05 A/R T4 Twin Scroll (external WG)
1.45 A/R T4 Twin Scroll (external WG)
Turbine outlet: GT-Vband (aka small 3″ vband) ~92mm OD for all EFR turbos

Additional information

Weight N/A
Dimensions N/A
Turbine Housing

None, T3 .83 A/R IWG, T4 .92 A/R Twin Scroll IWG, T4 1.05 A/R Twin Scroll External WG, T4 1.45 A/R Twin Scroll External WG



Borgwarner Turbos EFR & Airwerks