The Forced Performance FPT Blue turbocharger for 2015‑on Subaru WRX FA20 is offered in an external wastegate configuration with a welded flapper. Labeled as the Blue Turbo LOPE BB external WG version, it’s specified for FA20‑equipped WRX applications and identified by its external wastegate hardware in the description.
Forced Performance 2015+ Subaru WRX FA20 Blue Turbo LOPE BB External WG w/Welded Flapper