The PDR HX40 turbo is designed for increased reliability and faster spool up, over a stock HX40 turbo. The PDR HX40 turbo is recommended for trucks that are running between 350hp and 425hp. For trucks under 350hp you should consider the PDR HX35 turbo. For trucks over 425hp you should consider the Custom S300 Series Turbos or PDR Twin Turbo systems.

The PDR HX40 is also a good choice for medium horsepower trucks that do a lot of towing, and for customers who would prefer less turbo lag and more streetable driving manners versus customers looking for all out performance. Trucks intended for high performance street applications should consider the custom S300 Series or the PDR Twin Turbo systems.

 

 Each PDR HX40 is custom made to PDR specifications, including modifications to the oiling of the turbo shaft. These modifications along with zero balancing have lead to a significant increase in reliability. The PDR HX40 comes with a 16cm exhaust housing. Our exhaust housing is specially modified for faster turbo spool up. Our proprietary modifications allow a 16cm housing to spool like a 14cm housing, while still maintaining the top end airflow of a 16cm housing.

With HX40 exhaust housings, the flange is 4" straight out of the turbo and does not use an exhaust elbow. For some applications, this will require the use of a new down pipe and a 4" V-band clamp. Down pipe and clamp are not included, sold separately.

Typical turbo mount exhaust brakes are not compatible with HX40 exhaust housings and down pipes. The use of an exhaust brake with a HX40 turbo requires a brake that mounts downstream in the exhaust, such as a 4" remote mount exhaust brake. Fits 1991.5 - 2002 Dodge RAM Cummins Turbo Diesels.