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Exhaust Work

Can anybody recommend someone in the DFW area that does exhaust work. I'm wanting to change out the stock exhaust to a resonator. It's a pre-DEF engine (07' ISM) so I don't have to worry about any of the emissions stuff. But none of the RV places want to touch it. I don't have the tools or the facility to attempt this myself.

Thanks,
Robert
2008 Nimbus 342
Build# 6464
ISM 500
Allison 4000 w/retarder
2021 Jeep Grand Cherokee

Re: Exhaust Work

Reply #1 –
It was more than 10 years ago, but we used Inland Truck Parts in Denton for our 2003

(Note that the parts list will likely be different for your 2008, and we had to provide the parts.

Resonator and muffler replacement
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Exhaust Work

Reply #2 –
You will definitely like the resonator!!
Scott Powell
Doylestown, Ohio
2002 U320 3610 WTFS

Re: Exhaust Work

Reply #3 –
Quote from: Res777 –
...none of the RV places want to touch it.
Robert,

Installing a resonator is not a RV specific project, so RV shops are not where you want to ask.  Instead, look for "muffler shops" that do a lot of business working on big rig exhaust.  They will have the appropriate sized exhaust pipe, clamps and hangers in stock.  You just need a skinny exhaust tech who is willing to slide under the back end of the coach and do the job.  You can raise the rear end and put your safety stands in place, which will provide more working room.  The whole job can be done with clamps - does not require any welding - which means they can work anywhere in the parking lot outside the shop.

 
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Exhaust Work

Reply #4 –
Chuck is correct. Any diesel oriented muffler shop can do it. Make sure they incorporate several good mounts and visually check it clears the fiberglass exit. Keep an eye on that to make sure it doesn't migrate after it has been in service. Personally I prefer being welded with minimal clamps, both will be fine.

Re: Exhaust Work

Reply #5 –
My 08 Nimbus has no DEF but it does have a DPF.....I don't know if you can just delete it and replace with a resonator.
Keith and Dawn Hudson #18766
Current- 1999 U295 DFGE 40ft. - Build #5405
Coach Name: 4BUS4US
Previous- 2008 Nimbus CE338: 40th Anniversary Edition- Build #6486. 
Toad: 2021 Jeep Cherokee Trailhawk

 "I know something about a lot of things..a lot about something's..and everything about nothing "

Re: Exhaust Work

Reply #6 –
These are photos of my DPF. No sure how to delete this and replace with a resonator. 2008 Nimbus. 
Keith and Dawn Hudson #18766
Current- 1999 U295 DFGE 40ft. - Build #5405
Coach Name: 4BUS4US
Previous- 2008 Nimbus CE338: 40th Anniversary Edition- Build #6486. 
Toad: 2021 Jeep Cherokee Trailhawk

 "I know something about a lot of things..a lot about something's..and everything about nothing "

Re: Exhaust Work

Reply #7 –
As others mentioned, it shouldn't be too complicated for any big truck exhaust fitters to put an exhaust system together for you. I just did it on my 99 off a forest road in CO after the old fell off. Took me a few hours with limited equipment and held up just fine on the 900 mile trip to St Louis.

Noise volume increase is significant. Power may be a little better and managed a bit better fuel mileage as well.
1999 U320 WTFE #5586
2014 Subaru Forester 6sp
4000 watts of solar
650 aH @ 24v

Re: Exhaust Work

Reply #8 –
Quote from: Bigoil76 –
My 08 Nimbus has no DEF but it does have a DPF.....I don't know if you can just delete it and replace with a resonator.

Nope, not unless you otherwise muck with the emissions controls/programming.

Res777 has an ISM, not an ISL, and sounds like it's pre-DPF (there's a previous discussion noting that it's ESN-dependent)
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Exhaust Work

Reply #9 –
Quote from: Bigoil76 –
These are photos of my DPF. No sure how to delete this and replace with a resonator. 2008 Nimbus.
If you do deleat I would retain it for resale. Your local emissions are also subject to change. May also require ECM to be enabled to operate with it removed. These are all unknowns and I would fully understand the costs of doing so. I use V band clamps and if removed with those reinstallation would be possible fairly easy. Need to do some homework with somebody that actually knows, not us speculating. IMO

Re: Exhaust Work

Reply #10 –
Yes. I have given up my quest to remove mine due to being able to find anyone, even at Cummins that can answer me. Removing emissions equipment is a touchy subject. It was just a want for me and I have many others that are more attainable. I just wanted Res777 to know that he MAY have one as well. My coach was built in 2007 as was the engine ..even though it is a 2008 coach. And mine is an ISL 425. ... different from his...
Keith and Dawn Hudson #18766
Current- 1999 U295 DFGE 40ft. - Build #5405
Coach Name: 4BUS4US
Previous- 2008 Nimbus CE338: 40th Anniversary Edition- Build #6486. 
Toad: 2021 Jeep Cherokee Trailhawk

 "I know something about a lot of things..a lot about something's..and everything about nothing "

Re: Exhaust Work

Reply #11 –
Quote from: Bigoil76 –
Yes. I have given up my quest to remove mine due to being able to find anyone, even at Cummins that can answer me. Removing emissions equipment is a touchy subject. It was just a want for me and I have many others that are more attainable. I just wanted Res777 to know that he MAY have one as well. My coach was built in 2007 as was the engine ..even though it is a 2008 coach. And mine is an ISL 425. ... different from his...
Have you talked to any of the ECM reprogramming shops. They may be able to give you the answers you seek? Probably would be better to speak in person to get actual answers, not responses

Re: Exhaust Work

Reply #12 –
Thanks Scott , do you know of any in the area or that I could contact? I'm in Phoenix. I don't really have to much of a problem with the DPF being on my coach,  though if I knew anything about what it was, I probably would have passed on the purchase. I just knew I didn't want anything to do with DEF, having had nothing but problems with it on my 2012 Chevy Silverado I had previous to pull our 5'er. I really don't like that I have no information on it in any of my literature. Also, am I just to assume it's doing what it's supposed to with the regenerations. There is no indication I know of about the filter differential and when or if it's "doing its thing". If the differential pressure gets high or if it doesn't regenerate is it going to send the coach into low power mode or something? I'm trying hard to learn about my coach and want to keep it...I just don't like not understanding .. any direction would be greatly appreciated...
Keith and Dawn Hudson #18766
Current- 1999 U295 DFGE 40ft. - Build #5405
Coach Name: 4BUS4US
Previous- 2008 Nimbus CE338: 40th Anniversary Edition- Build #6486. 
Toad: 2021 Jeep Cherokee Trailhawk

 "I know something about a lot of things..a lot about something's..and everything about nothing "

Re: Exhaust Work

Reply #13 –
When it regen's you will see white smoke and a lot of it coming out the exaust. If it fails to regen it will do as you mentioned and derate the engine . I've had the particulate filtered mufflers on a couple of ISX engines. If you remove the stock muffler and reprogram the ECM some shops that do engine work won't work on the engine. Federal regulation rules and issues. You may or may not have an indicator in the dash to tell when it's in regen mode.
Dub McBride 1996 270

Re: Exhaust Work

Reply #14 –
No I dont. I avoided they problem by year. When I replaced y ECM i purchased one out of Texas. I do know a lot of owners of Dodge Ram trucks remove them. Ive even stayed pre 2007 on the Rams to avoid issues. Someone will know more than me. There may even be a simple work around to retain sensors ? All a big unknown to me by design.

Re: Exhaust Work

Reply #15 –
Thanks guys... I will do a little more investigating as I can, trying to determine if the DPF is functioning. In my travels I have not noticed any white smoke coming from exhaust nor do I know of any indications on dash informing me of function. More importantly to me than removing, is the functionality not stranding me somewhere in limp mode unnecessarily.... If I come up with any more information on it, I will post ...and I know others will likewise ....thanks again      Now back to another week of 115 heat..
Keith and Dawn Hudson #18766
Current- 1999 U295 DFGE 40ft. - Build #5405
Coach Name: 4BUS4US
Previous- 2008 Nimbus CE338: 40th Anniversary Edition- Build #6486. 
Toad: 2021 Jeep Cherokee Trailhawk

 "I know something about a lot of things..a lot about something's..and everything about nothing "

Re: Exhaust Work

Reply #16 –
No reputable shop will remove any emissions related hardware. 
It's just a bad idea and against the law. 

Re: Exhaust Work

Reply #17 –
Quote from: Protech Racing –
No reputable shop will remove any emissions related hardware. 
It's just a bad idea and against the law.
Keep in mind that this may also come into play when you're on the road. I'd hate to be stranded somewhere only to realize the local shops won't touch my rig because they're worried about the liability of working on it.
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: Exhaust Work

Reply #18 –
I'm past wanting to remove it... I want to know how it works, and if it's working ... so it doesn't strand me by limping the motor due to plugging or something else....The resonator turns out was just a nice thought..
Keith and Dawn Hudson #18766
Current- 1999 U295 DFGE 40ft. - Build #5405
Coach Name: 4BUS4US
Previous- 2008 Nimbus CE338: 40th Anniversary Edition- Build #6486. 
Toad: 2021 Jeep Cherokee Trailhawk

 "I know something about a lot of things..a lot about something's..and everything about nothing "