prittyboy

Has anyone had their catalytic converter stop up? If so how did ur truck run when it happend, tryin to figure out if mine is without chasing ghost.
Any and all opinions and replys welcome, thanks

infidel

Not mine but have run into others that have plugged.
Symptoms are low power, high boost and egts.
You can buy a test pipe for 12 valves from Dodge to check the cat and if you're smart just leave it in. Part number 52019170AB

Ronco95

I can't see making boost with the convertor stopped up. The lack of exhaust flow would seemingly kill boost.

Mike D

Boost is a measurement of restriction.

prittyboy

the truck is new to me and I havnt had a 12v in a while, I have been driving a slightly modified 24v and going to the 12v stock it feels like a turd, why do u recommend leaving the cat on the truck?

infidel

I meant leaving the test pipe on the truck.
Better yet ditch the entire stock exhaust system and replace it with at least a 4" from the turbo back, no cat, either a free flowing or no muffler.
Stock 12 valves are dogs compared to the newer ones but more power ranges from free to cheap.
Read this http://www.cumminsdatabase.com/read.php?id=58

prittyboy

OH my bad, I misread what u wrote, im calling dodge today and gonna try and get that test pipe, the other article was awesome!! thanks

high bid

I just removed all my exhaust and have a free test pipe....just come pick it up along w/the rest of the exhaust.

nickg

I dont have a 12v but I thought all the 12v had was a resonator??

infidel

24 valves have a resonator in place of the 12 valve's cat.
It's a little smaller in diameter and my understanding is it's not restrictive.

prittyboy

just out of curiosity how long is the test pipe? does it just bolt in or does it have to be welded in? Where are u located?

infidel

It's the exactly same length as the cat and just clamps in.
high bid is in San Antonio
Send him a private message by clicking here> https://www.dieseltruckresource.com/...=newpm&u=54484