I put an Aero 2525 on my CRD and was worried about it being too noisy. I bought it new on ebay for $101 delivered, based on what I know now I would have used an inexpensive cherry bomb style muffler. Exhaust noise is not a problem, just need something to break up resonance. That said the 2525 works fine.

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Mail Rated 2005 Red CRD Sport with large rectangular hole in top right behind the EVIC and above the heated leather seats.
2004 Jetta TDI

I would go with an el cheapo cherrybomb myself, but I think the rest of the exhaust is stainless, and I dont want the muffler rusting out.

Since I dont think these stainless mufflers are worth what they charge for them I am tempted to make my own.

I wonder if only having an expansion chamber would prevent a drone. I am thinking of what Darbywalters said. Just taper down a 4-5" dia tube on both ends to fit the stock exhaust, sort of like a gutted out aero muffler. But I dont want to waste my time, if someone knows this will still drone I wont do it.

I also have the option of making a cherry bomb type muffler...a perforated tube inside a larger tube, with or without ceramic fiber packing. Do you think it would drone if I didnt use any packing?

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It may be that your only purpose in life is to serve as a warning to others.

06 CRD Sport
Built 5/11/06
Jeep Green
Rocklizard diff cover
V6 Airbox

goto your local metric bike shop (Yamaha, Honda etc..) they will have many brand new stock mufflers that came off of new bike that put after market pipes on. the cool part is that most of them have removable baffles so you could just pick up a few of those and just put them in line with your pipe. or use them for something bigger.

if you do anything... you know we will want to see pics!

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05 CRD
3" Rough Country Lift
SAMCO SPORT Hoses
Magnaflow Muffler (12226)
CAT 2 Fuel Filter
Fumoto Drain Valve
EGR replaced at 50K
in service 8/31/04
Sold 7/21/10 125k miles
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Paved Roads, another form of unnecessary government spending...

I'm cheap too but I just got a Magnaflow SS 12256 off of Amazon for $58 including shipping. Cheap enough for me.

Steve

I think you're all jealous of my sweet muffler You are all missing my point, the hissing sound is exhuast rushing out faster than stock. Have you ever seen a hydrofoil? that is a passive device which creates lift, the only input is water+momentum. In this case the input is moving gasses.

Is any one here an engineer or scientist that works in a wind tunnel? I doubt it. No one would buy AeroTurbine if they didn't work. All you naysayer's need to try one before you claim it can't work. It doesn't pull exhaust out like an actual vaccum, the exhuast hits the structure which slows the gasses down on the outside of the "airfoil" creating lower pressure which forms a vortex, rushing exhuast faster through the middle. EGTs much lower due to faster flowing exhaust and my mileage went up 1-2mpg.

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Black '06 CRD: 2.5" OME lift, Aero Turbine Exhaust, Warn m8000 on custom bumper. NEW Falken Ziex S/TZ04 245/75/16's Scored a smokin' deal @ http://www.tirezoneusa.com

OD '48 Willys CJ2a: fresh motor, new wiring harness, stainless exhaust, bestop, 34" TSLs and about 200 hours into the thing, possibly FOR SALE

Just for the record....


I do

Bombardier Learjet

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05 CRD
3" Rough Country Lift
SAMCO SPORT Hoses
Magnaflow Muffler (12226)
CAT 2 Fuel Filter
Fumoto Drain Valve
EGR replaced at 50K
in service 8/31/04
Sold 7/21/10 125k miles
----------------------------------------------------------
Paved Roads, another form of unnecessary government spending...

Ohh...that would be a cool job. I've only seen a wind tunnel once, and it was a small one for testing scale models of prototype airplanes. Even the small one was impressive.

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Chad Hargis
Nashville, TN
2008 Grand Cherokee CRD
2005 Liberty CRD *SOLD*

The input to a hydrofoil is an engine or wind blowing on a sail, it takes energy being put into it for it to give lift, no different than a wing on a plane, that also needs energy input to work. The device may be passive but the force behind it is not.

The only way to make a given flow of air to move faster is to make it move through a smaller space, which is impossible without some sort of restriction.

I dont doubt you lowered EGT's and gained a few MPG. But its easy to improve on the stock muffler and I have no doubt that one of the mufflers listed HERE would do the same thing.

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It may be that your only purpose in life is to serve as a warning to others.

06 CRD Sport
Built 5/11/06
Jeep Green
Rocklizard diff cover
V6 Airbox

haha maybe I'll just install a fan in the exhaust pipe and suck it all out of the engine

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Former CRD owner... now I just sit around and stare at the wall.

Not a bad thought. Add a ram air pipe going into the exhaust pipe and make it an educator.....the faster you go, the more it sucks.

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2006 Libery Sport CRD, Lt Kakhi, nicely equipped
*****GDE Hot Tune at 38,879 miles
*****Stock TC.....for the time being!!

For anyone out there contemplating a DIY muffler job I just replaced mine with a Magnaflow 12256. Three clamps, an 18" extension pipe, and a sawsall and I was done so fast I couldn't believe it. Everything lines up so easily. I'll have it welded someday but the clamp job seems really tight.