werid muffler thingy on 6.0 powerstroke diesels

have any of u guys seen what looks like a catalytic converter on 03 - 07 6.0 powerstrokes?  What is its purpose is it a premuffler to silence to turbo whistle cuz i know disels dont have cat conv.  It is located before the muffler and after the turbo.  
solid axle chevys cant be beat
78 K5: 350 V8,700r4,np208, 8 lug D44 4:88, 14 bolt 10.5 4:88 with detroit locker and 35 inc parenelli jones dirt grip tires

It is a device to aid in the control of suspended particulates emissions that diesels are famous for, not a CAT.  

So like the early ancestor to the DPF that we all know and love today!  
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I believe its correct name is something like a thermal reactor or something. It is supposed to help trap and consume the particles  

So it is like a mini particulate filter...  
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Well kinda. It traps them and burn them when exhaust temps are high enough. This is why new GM Dmax's have a funny tail pipe because they are maintaining a higher exhaust temp throughout system to consume particles better and then they expand and mix it with cool air at tail pipe other wise exhaust temps could exceed 700 degrees.  

"It is supposed to help trap and consume the particles"

Exactly! Just like the new DPF's that Ford/Dodge/Chevy have... just the new ones are on a much larger scale than its predecessor.  
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so it has nothing to do with the notorious 6.0 turbo wihstle?  I think they sound badass when they wistle like a jet plane  
solid axle chevys cant be beat
78 K5: 350 V8,700r4,np208, 8 lug D44 4:88, 14 bolt 10.5 4:88 with detroit locker and 35 inc parenelli jones dirt grip tires

Snoman as helpful as you usually are you really need to learn when to stick to what you know.  In the 03-07 6.0L's that "thing that looks like a CAT" really is a catalytic converter.  What you are talking about is known as a diesel particulate filter and it is only found on the 6.4L p-strokes, 6.7L cummins, and new d-max's.  Plus mixing the air in at the exit of the exhaust the way that ford and chevy did makes no since because that gives you a false reading since it is cooling it off right there and a lot of people use those thermometers to check at the tailpipe rather than put a gauge in and monitor it correctly.  Also what are you talking about 700 degrees for?  Because you are only going to have to worry if your diesel is running above 1200-1300 EGT's for an extended period when that is happening you can hurt your motor or and this is important you are in danger of melting your turbo or at the least sitting it up to fail.  Also the cat has nothing to do with the turbo whistle of the 6.0L.  That has to do with the fact that they are using a large impeller in the 6.0 and the 7.3L did therefore allowing the 6.0L to build more boost.  If you put on an aftermarket exhuast system the turbo whistle will become louder and it gives the truck a better sound all around.  I'll tell you what snoman you take care of everything but the diesel questions and I'll pick them up for you.  What do you say?  They did also put resonators on some of those trucks, but since he didn't say it looks like a basketball I'll assume that he is talking about the CAT as he described.  

TM98DYEC8:
Snoman as helpful as you usually are you really need to learn when to stick to what you know.  In the 03-07 6.0L's that "thing that looks like a CAT" really is a catalytic converter.  What you are talking about is known as a diesel particulate filter and it is only found on the 6.4L p-strokes, 6.7L cummins, and new d-max's.  Plus mixing the air in at the exit of the exhaust the way that ford and chevy did makes no since because that gives you a false reading since it is cooling it off right there and a lot of people use those thermometers to check at the tailpipe rather than put a gauge in and monitor it correctly.  Also what are you talking about 700 degrees for?  Because you are only going to have to worry if your diesel is running above 1200-1300 EGT's for an extended period when that is happening you can hurt your motor or and this is important you are in danger of melting your turbo or at the least sitting it up to fail.  Also the cat has nothing to do with the turbo whistle of the 6.0L.  That has to do with the fact that they are using a large impeller in the 6.0 and the 7.3L did therefore allowing the 6.0L to build more boost.  If you put on an aftermarket exhuast system the turbo whistle will become louder and it gives the truck a better sound all around.  I'll tell you what snoman you take care of everything but the diesel questions and I'll pick them up for you.  What do you say?  They did also put resonators on some of those trucks, but since he didn't say it looks like a basketball I'll assume that he is talking about the CAT as he described.

You need to do some research. IT IS NOT A CAT!!! It was not even possible until they took sulfur out of fuel because sulfur destroys the CAT. (they started to take sulfur out of gas in 73) Diesel got away without having CAT's because of the excuse that the sulfur in fuel prevented that. Starting in 08 you will see diesels with true CAT's on them (maybe of a few later 07's too) but not on any 06 or earlier because the high sulfur fuel then would render it inop. Some like yourself like to call them CAT but they are not. The are nothing more than thermal reactors to trap and consume particulates and nothing more but call them CAT's if it makes you happy but they are not. BTW, I well know the EGT limits of a oil burner but it cools as it travels through system and expands but it is a lot hotter on new models and can cause grass fires and damage paint and finish so on some models the mix and cool it at tail pipe tip. Of coure there will always be someone that knows more than people that built them and will chop system off and negate emission reduction and do their bit to increase pollution and global warming. Diesels are real nasty NOx producers and always have been and even with a 90% reduction planned in 08 for them they are still worse than gas motors in that regard.  

Now that u mention it it does have a round basketball like shape and i really dont think its a cat  
solid axle chevys cant be beat
78 K5: 350 V8,700r4,np208, 8 lug D44 4:88, 14 bolt 10.5 4:88 with detroit locker and 35 inc parenelli jones dirt grip tires

The round thing that looks like a basketball as u now described it is called a resonator.  Oh yeah and snoman after I take one of the cats that I have or my friends have off of there 03-07 6.0L's and cut it in half to prove to you that it is in fact a cat  I am going to wrap it around your head!  Once again the resonators do help with the soot but not in the exact way that u are describing because they won't let the motor run hotter for periods to burn off the soot.  That is a diesel particulate filter and the sooner u understand that the better off you will be.  And yes these cats are the exact same cats like the one's on the gas trucks just slightly larger for the larger pipe!  

TM98DYEC8:
The round thing that looks like a basketball as u now described it is called a resonator.  Oh yeah and snoman after I take one of the cats that I have or my friends have off of there 03-07 6.0L's and cut it in half to prove to you that it is in fact a cat  I am going to wrap it around your head!  Once again the resonators do help with the soot but not in the exact way that u are describing because they won't let the motor run hotter for periods to burn off the soot.  That is a diesel particulate filter and the sooner u understand that the better off you will be.  And yes these cats are the exact same cats like the one's on the gas trucks just slightly larger for the larger pipe!

You can cut all you want but it will not prove a thing. Like I said, the EPA mandated sulfur removal from fuel so that they could close diesel loophole and mandate true CAT's on them starting in 08.(This is why they forced removal of sulphur from gas before CATs came out in 75)  They are also going to have to take some serious steps to reduce NOx from them too and it is going to take more than a CAT to do that as turbo diesels are very serious NOx generators.  

Snoman for once you nothing about what you are talking about, and it is becoming more and more about the more that you saw.  You just further prove your limited knowledge in diesel engines and their parts.  

No you are barking up wrong tree here and clearly showing your lack of knowledge on this subject though you claim to be a diesel guru.  CAT's will NOT properly or long function with sulfur in fuel and that is why they are removing it so CAT's can function on them. You can dream all you want but it is not a CAT. High sulfur content fouls the catalyst.  Diesel's escaped having them in past because of the excuse of fuel sulfur content making them not feasible. EPA changed that and starting in 08 they will have CAT's and not the thermal reactors for particulate emissions that are mistaken by some such as you for CAT's or call them CAT's because they do not know any better. Truth be known, most diesel are nasty polluters (especailly NOx wise) and they use turbo charger to boost power and air flow through engine to dilute the PPM of emissions coming out tail pipe. The problem is that when you measure the grams per mile, you find that they are not very friendly so they use PPM to make them look cleaner. Naturally aspired gas engine have much lower grams per mile (GPM) because no excess air is routed through engine to dilute emission PPM levels with higher air flow rates. You are going to see more of GPM ratings in future because they are ma much truer gage of emissions than PPM. You can make anything look clean if you put the right twist on it but GPM will not let you twist your way out of it.