Hello Guys,

I'm going to be towing a travel trailer and such around and I thought I'd help the old girl out and work on the exhaust. Should I just hack the muffler off my CRD or install a muffler? From what I gather, there is almost no sound difference and if I hate it it'll be easier to add the muff back on vs buying a muff and wishing I had just hacked it. So I'm looking for tips from you who have gone before me. What should I do?

-c

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2006 Dark Khaki CRD
Homemade Cross rails

Install full flow muffler like a flowmaster and air flow like K&N air filter.

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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

Disconnect stock muffler at flange, see if you like it. takes 60 seconds and is non destructive.

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06 CRD Limited. IMII, GDE TCM, Carter transfer pump, Upgraded oem primary, 2 micron secondary, 3 inch mandrel straight pipe.
Transgo shift kit, EHM, fcv butterfly removed, egr plated off. 19 3/8 solid flex fan, no electric fan, 10k lb aux trans cooler.
Frankenlift II, Mopar skids, allj's rails, 235/85 km2 on stock rims

Glasspack or straight pipe.

I can here the turbo spool up a little more, seat of the pants says it accelerates faster.

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2005 CRD "Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.

have you seen a cutaway of a flowmaster muffler? they have them on display at Summit Racing....one thing a flowmaster is not is a full flow muffler, they are chock full of baffles and chambers....if that's what you meant by full flow. I tend to think full flow is a straight through unimpeded muffler like a Magnaflow. no baffles, no chambers, just straight through front to back. just a heads up.

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2003 Silver Sport - Debadged
245/75/R16 DuraTracs
Cragar Soft 8s
OME Coils & Front Shocks, Bilstein Rear Shocks - Muddified Lift
JBA 4.5 UCA
K&N CAI
MagnaFlow Exhaust
Rola Vortex Rack

http://www.fusion-multimedia.com

The Flowmaster is a chambered muffler and quite restrictive compared to a Magnaflow or Dynaflow. I would not put on a K&N either if you care about keeping your CRD for more than 100k miles. I've seen many oil analyses that show higher silica levels than normal using an aftermarket oiled filter, demonstrating they pass more dirt than a factory air filter.

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'05 Liberty CRD B100, SEGR - SOLD

'01 Beetle TDi B100, EGR delete
'83 Mercedes 240D B100, no EGR

--- SEGR Builder ---

I just cut out my muffler and replaced it with a 2.5 inch diameter pipe. It is slightly more noisy, but wow the little beast spools up way faster. I hope to see a small increase in MPG as well. I vote for the cut it off and replace it if you don't like ti. My guess is that it will stay off though.

Loco

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2005 CRD Limited
1.5/2.0 Daystar Lift
V6 Airbox
SEGR ala TurboTim
255/70/16 Big O on Rubis minor trimming required
87k+ miles=3 factory TC's, 2 front pumps, 1 turbo, & drivers side wheel bearing/hub
Suncoast TC and Transgo Snake oil-41k
New Front Drive shaft-30K
Stage 2 InMotion Tune-54k, makes me go
B&M Tranny Cooler

X2. Had a muffler shop cut just upstream of the flange to install a true 2.5" flange in its place, then they bent a pipe to go all the way back to the former exit of the stock muffler and welded in place. For around 100bucks and a hour of my time, I couldn't have asked for a better mod. Slightly throatier sound, but not significantly louder, but the flow is tons better and as stated, turbo spool is faster. The muffler guy complemented the idea saying,"I can't even do the parts for a decent aftermarket muffler for that price and this looks like it flows much better."

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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 will end up doing the same thing. I put a Magnaflow on my turbo gasser drag car because it needed noise suppression without compromising flow. But I just put a straight pipe on my Mercedes turbo diesel and I can't tell the difference in noise. It still has a resonator, but the CRD will still have the catalyst.

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'05 Liberty CRD B100, SEGR - SOLD

'01 Beetle TDi B100, EGR delete
'83 Mercedes 240D B100, no EGR

--- SEGR Builder ---