Part Numbers GT28, GT25, GT2871, GT2860, T25, T28, SR20, GT2871R, CA18DET Specifics and Features Capable of boosting horse power up To 400+ BHP High quality material, cast housing with durable steel 5 bolt exhaust flange Capable of 8 PSI or 15-25 PSI output at peak power Internal wastegate setting: 8 PSI Compressor Size Inlet(Air Intake): 3″(77.5mm) Outlet: 2″(51.2mm) Trim: 48 Inducer Diameter: 49.20mm Exducer Diameter: 71mm A/R: 0.6 Turbine Size.