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. For the 1991.5-93 applications, a down pipe
can be custom made, please call for details. For the 1994-02 applications the
HX40 down pipe and clamp will work.

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