exhaust on cummins 5.9l

arthr31 · Oct 26, 2005

OK, I didn't know where else to put this, figured this was a better spot than rural living... At least this forum deals with grease, oil, etc. (and since it's a question about my truck, we can consider it an oil burner question! /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif)

Anyway, here goes: I have a '98 2500 w/ cummins 12 valve 5.9L engine. Good truck, nice to drive and work with. But, I have to replace the exhaust, specifically the muffler (it has a catalytic). Dealer wants 300 parts and labor for the muffler. At that price, i'm thinking about replacing from the turbo back with a performance aftermarket (looking at gibson; dynomax; mbrp, etc.)

Does anyone use any of these in a similar setup? I'm interested in replacing the entire thing since I've got rusted brakets and pinholing on the turbo down pipe (dealer missed diagnosing that..) I'm finding that an entire system might only run about 4-500 in change. This seems better than spending 300 on the muffler alone, but could this be right?

thanks all. sorry if this was the wrong place to post this... art

HGM · Oct 26, 2005

I cant tell you much here, but if you do a search for performance diesel, maybe throw Cummins in there too, you should find some good stuff relating to it. I would go with the aftermarket cat back with new down tube though, over a factory muffler. It will flow better, give you better performance and have little or no negative effects other than sound.

arthr31 · Oct 26, 2005

Thanks, HGM.
Sound ain't a problem for me!! /forums/images/graemlins/grin.gif

TOMLESCOEQUIP · Oct 27, 2005

Any questions you have about your dodge cummins can be answered here I threw away my stock muffler on my 04.5 cummins & installed a donaldson medium duty truck muffler that they use on the 5.9s in the larger trucks. The cost was about $65, and it has 4 times the airflow of the stock muffler without being too loud.

KubotaTrax · Oct 27, 2005

I have a 2001 2500 5.9l and I love the truck.
My 2 cent worth is. Best place to get turbo back and best price, go to www.ebay.com search (Cummins exhaust).
Great price and work really well.
Get a 4" turbo back 16 gauge Al steel back.
You want go wrong for the price.
Good luck and again...my 2 cent.
Oh....great forum...www.TurboDieselRegisty.com /forums/images/graemlins/grin.gif
good luck.

RedRocker · Oct 27, 2005

Try these guys. 4" Stainless steel trubo back for $439.

Scrounger · Oct 27, 2005

Ping me off list and I can fill you in on the set ups we've used at off-road.com I currently have a F350 Super Duty that I'm working on. Very impressive engine once opened up a bit.

arthr31 · Oct 27, 2005

Thanks for all of the responses, guys. I'll be checking these suggestions out. Also, anyone ever bought a replacement seat from Dodge? MY drivers seat is getting pretty tired and saggy (gee, so am i? ) and want to replace it. Associated cost?
ONce I'm done working on this truck, i'll post some pix. Then buyers.. Just kidding.

ccsial · Oct 27, 2005

I have 97 12V 5 speed.

You may try this site too.

http://www.turbodieselregister.com/

boomer4snow · Oct 29, 2005

Hello, I have a 2004.5 Cummins and I replaced the exhaust with a MBRP exhaust kit in T304 stainless. I live in the "rust belt" and wanted to have the exhaust last with all the salting they do on the roads.

Fit was great, after 1 year it looks as good as day one. It is louder than stock esp. since the cat fell off when i installed it /forums/images/graemlins/grin.gif EGT's are lower, and I think it sounds just right. install was easy, best part, I called MBRP in TN and had it in 2 days, install took about 40 minutes in the driveway.