Is it possible to run a aftermarket exhaust brake with a 5" system

 

I'm running a PacBrake with my 5". The Pacbrake replaces the 4" cast elbow that comes right off of the turbo so the never changes. The 5" downpipe connects at the elbow using a 4" reducer. Now, if you have gotten rid of the cast elbow and just have a 5" downpipe right off of the turbo then you will need a 5" inline exhaust brake.

 

Stupid question but doesn't the new model Cummins have one built in?

 

thanks for the pics staarma very helpful
To Wyatt Earp yes the new ones have it built it now sure if its stardard equip or optional buddy of mine has a 6.7 with the brake and it very nice towing his 25' gooseneck and tractor

 

6.7s use a variable vane turbo for the exhaust brake. It's a post-turbo add-on for the 5.9s. Dodge offered the factory or dealer-installed option of a vacuum-operated Jacobs on the later 5.9s, starting around 2005 or thereabouts, IIRC.

I want one of those PXRBs for the '07. Very nice feature to have when towing. I hear the Pacbrake PXRBs are quite effective.