All of Pro Systems turbochargers that we rebuild for any Subaru are Ultra Sonically cleaned, inspected for cracks, signs of heat stress and then measured to be within the specs for assembly. Any surfaces that your Subaru turbocharger require to be refinished/squared are performed on our In-House CNC machines. All of Pro Systems Subaru turbochargers are rebuilt using components that are at or above OEM quality. Pro Systems Subaru turbochargers are Dual Plane Digitally/Computer balanced to ensure smooth operation and long life.