The turbine housing is referred to as "Plus" because although it uses a GT25/GT28 mounting base, it boasts the equivalent Full Flow T3 compatible air ratios.
Specifications
GT28 "Plus" Turbine Housing
GT25 / GT28 Turbine Inlet - Optional GT3
2½ V-Band Exhaust Outlet
External Wastegate
Available in .63 & .82 A/R
Compatibility
GT28RS / GT2871R / GT2876R: 53.8mm Turbine Wheel
GT3071R / GT3076R / GT3082R: 60.0mm Turbine Wheel
GT3582R: 68.0mm Turbine Wheel
GT3071R 84Trim: 56.5mm Turbine Wheel*
GT3071R 90Trim: 56.5mm Turbine Wheel*
*$75.00 Additional Machining Costs
P/N: GT28R-P-IWG
RELATED PARTS
GT258U-01
GT25, GT28 Undivided Base Gasket - Stainless Steel (1)
CVB-0025
2½" Heavy Duty Stainless Steel (1)
FVB-0253M
2½" ID or 3" OD V-Band Weld Flange "Mild Steel" (1)
Allows for the use of 2½" or 3" Exhaust Tube
Also 2 can be used to adapt 2½" to 3" Exhaust Tube