Yes, it is a real shame that this engine sounds so bad.

I've tried 2.5 inch all the way back, 3.0 inch, i've tried mid length turn outs, i've tried a hood stack. (removed hood, moved coolant pressure bottle, removed heat shield).

For the shorter length pipes the turbo was very very loud

It just sounds bad.

For me, the 3 inch straight pipe with a downturn is about as good as it gets for this engine.

OK maybe it's not bad but its not good.

At work we have 2.2L cat/Perkins 4bt's and even merc 4 cyl engiens They all sound better than our vm.

I suspect a part of the problem is the vg turbo, it spools so quickly.
But other vg engiens sound great/good.

Perhaps its the split injection?

Whatever it is it's a shame. But i'll take it. This thing makes me smile every single day.

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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

Yes they do not sound good but hey what else will pull a decent trailer full of quads and get good fuel mileage it sure wont be a gasser.

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Mine 2010 6.7L Dodge Ram 3500, Crew Cab, Long bed, Dually, 4x4 no mod's yet but a few are planned
The Wifes 2005 CRD Liberty with Fumoto Valve, Scangauge II, 2.5" straight pipe, EHM, and EGR unplugged awaiting poss Water Meth and a 2" lift kit

No problems with running gutted cat for three years. It will not cause codes to be thrown. However, I did it before GDE went on record that itprovides provides no power, economy, or exhaust temp benefits.

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

Doc, I did not know gde did any testing in this area.

I observed real world 200 F drop on egt's. At low speed high throttle. (think climbing dunes) Ambiant temps were roughly the same, around 110f The sand dam did not change. I would push 1000f and now I sit around 800.

My results are from an uncontrolled environment.

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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

America... the freedom to screw with other people as you see fit...

On another note, I love smoking a cigarette and then blowing the smoke into peoples faces that are next to me. It is hilarious when they cough..

Your brother-in-law is one reason we don't have more diesel options in the country. And the reason for diesel emissions testing. He likes to blow smoke on people only because he can get away with it. If he did it while standing on the sidewalk himself, he would probably get his arse beat. It's just another one of those cowardly things that people in cars do because they're anonymous and they can get away - no better than yelling or throwing things out the window at people.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.