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The BorgWarner EFR B2 9180 turbocharger is an EFR B2 variant cataloged with a 1.05 A/R turbine housing for forced-induction engines. That A/R listing clarifies the turbine sizing choice for matching spool and flow to engine displacement and tuning goals. It's a straightforward specification reference for technicians and tuners configuring EFR B2 turbo setups.
BorgWarner Turbo EFR B2 9180 1.05 a/r VTF
