Hi, All Anyone have any suggestions for cat backs or mufflers. Oh Yeaa Sound clips would be great!

Magnaflow makes a nice cat-back for the liberty CRD. It'll cost you a bit of coin, though. You'll get similar results by simply hacking off the reducing flange just after the CAT, and the reducer after the muffler, then splicing in a section of quality continuous-width (i.e. no pinches where it bends) tubing. Increased turbo-spool, slightly more grumble, better fuel economy, not much more overall noise.

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2005 Silver CRD Limited
245/75R16 GoodYear Duratracs
Fumoto drain | ProVent CCV Filter
Stanadyne FM100 filter | Cummins fuel pump
GDE Eco | SEGR | BoulderBars | FrankenLift | Frankenskids

I went with the Magnaflow cat-back system (15870) mostly because it was the easiest solution. It bolted in like a dream, and looks and sounds great.

- Chris

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Used to own:
2006 CRD Sport
Suncoast TC, Transgo shift kit, Inmotion, ORM, EHM, Magnaflow SS exhaust, Fumoto valve, EVIC added, Hensley TruControl brake controller, Pirelli Scorpion ATR LR-D in spring/summer/fall, FIA winter front and Blizzaks in winter

Here is a pic of the magnaflow muffler and section of pipe a local shop used to replace the stock flange and muffler. The bends have no crimps and now it's true 2.5" the whole way. Back from where the rear of the stock muffler was is stock. $140 parts & labor. Wife can't notice a sound difference. I hear more turbo and feel less restriction.

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2005 CRD rolled August 2009

I did same with v-force, which is a flowmaster 40 clone. I'm glad I did so with great results.

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2006 Black Jeep Liberty CRD Limited
K&N, Samco Hoses, Michelin 245/70-16 LTX A/T2, Fumoto F-102, V-Force Muffler, Mopar, Hitch, Trailer Wiring, Skid Plates, Slush Mats, Rear Shelf, Predator Stage 1, Transgo, ORM & CodeReader, Facet 40109 Pump
"IT'S A DIESEL THING, YOU WOULDN'T UNDERSTAND"
Certified Services Auto & Truck Repair

I did a stright thur 3" pipe with good results. Used Mandrel Bent Flowmaster tubing and no muffler.

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Founder of L.O.S.T.
2006 CRD Sport
Mods: GDE Hot Tune w/ 364#@2000rpm/Air Box /3" Str8 Exhaust/ASFIR Alum Skids/245-75R-16 Cooper STT PRO/OME LIFT w/Clevis & 4 Spring Isos/AirTabs/Rigid 10" S2 LED/4xGuard Ctr Matrix Bumper
Drag Strip:Reac=.1078_60ft=2.224_1/8=10.39@64.8mph_1/4+16.46@80.8mph