Overview 

The PSR PRO98 DBB Turbo is an ultra-high-performance turbocharger engineered to support up to 2,550 horsepower, making it ideal for extreme drag racing or high-powered competition builds. It features a 98.4mm billet aluminum compressor wheel, designed for maximum airflow and top-end power. The Inconel turbine wheel, sized at approximately 118mm, provides exceptional heat resistance under the most demanding exhaust conditions. Equipped with a dual ceramic ball bearing (DBB) system, the turbo offers faster spool-up, reduced friction, and greater durability under high boost loads.

This model includes the distinctive T51R-modified compressor cover, which enhances flow and produces the signature "jet-whistle" sound often desired in high-end builds. It comes with a T6 open inlet flange, allowing for maximum exhaust flow from large-displacement engines, and a V-band outlet, which simplifies installation and provides a secure, leak-free connection. The turbine housing A/R is 1.25, offering a strong balance between spool and high-RPM power, suitable for large single-turbo setups.

To support high-volume airflow, the compressor housing uses a 6-inch inlet and 4-inch V-band outlet, while the turbine side typically features a 5-inch V-band discharge. The center housing is lightweight, fin-cooled aluminum, with provisions for anti-surge ports and a speed sensor. The turbo is oil-lubricated and requires a restrictor in the oil feed line to protect the dual ball bearing system. With race-proven components and construction, the PSR PRO98 is built to deliver peak power and reliability at extreme levels of performance.

Features

• Horsepower Rating: Supports up to 2,550 HP
• Compressor Wheel: 98.4mm billet aluminum design for maximum airflow
• Turbine Wheel: Approx. 118mm Inconel wheel for extreme heat resistance
• Bearing Type: Dual ceramic ball bearing (DBB) for quicker spool and increased durability
• Compressor Cover: T51R-modified housing for enhanced flow and signature turbo whistle
• Turbine Housing A/R: 1.25 A/R for high-flow and strong top-end power
• Turbine Inlet: T6 open flange for large displacement engines and high exhaust volume
• Turbine Outlet: V-band (typically 5") for secure, easy installation
• Compressor Inlet: 6-inch hose connection for high-volume intake
• Compressor Outlet: 4-inch V-band outlet for large piping setups
• Center Housing: Lightweight, fin-cooled aluminum with integrated speed sensor port
• Anti-Surge Ports: Built-in ported shroud to reduce compressor surge at high boost
• Oil Feed: Requires restricted oil feed (~1mm orifice) to protect ball bearings
• Application: Designed for extreme performance builds, drag racing, and high-boost applications