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Discussion Starter · #1 ·
IS it possible to remove the silencer ring on the 6.7s?
 

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I removed mine. The turbo screams like a banshee now! Thats it! Also at certain rpms (OD 6 sp/man) the engine will seem to have a surge of power, guess cause the VGT. Tell you later about mileage and if dash lights come. But sounds sweet. Theres 3 dowell pins that need to be punched in, make sure that dont enter the turbo though. There a booger to get out to man! Later chris
 

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Since there are alot of turbo issues with the 6.7 if you remove the silencer ring you will also be voiding the warranty on the turbo. If you can afford a couple grand for a new turbo go ahead and remove it. Dyno results have show a 25 to 40 HP LOSS when the ring was removed. It is more than just a silencer, it actually helps direct the air into the turbo.
 

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Since there are alot of turbo issues with the 6.7 if you remove the silencer ring you will also be voiding the warranty on the turbo. If you can afford a couple grand for a new turbo go ahead and remove it. Dyno results have show a 25 to 40 HP LOSS when the ring was removed. It is more than just a silencer, it actually helps direct the air into the turbo.
Just so you can read it again. ^^^^
 

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That isn't a silencer ring, it's a surge housing.
With a variable turbo and recirc boost it's better for perf to have the surge housing, unless all you do is wide open runs
 

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If they void my turbo warranty than I'll spend 1100 on an JA S300 turbo instead of buying another stock turbo for twice the amount.
 

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It will probably be a powertrain warranty void that they will do, not just the turbo.
 

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I removed it on my first 6.7. Loved the sound but definitely noticed a power difference. I am not going to remove it on this 6.7.
 

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by chance anyone have one they would want to sell, I broke mine getting it out
 

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I honestly didnt notice a drop in power pulling today. I pulled 27,000 lbs of round bales (17) and the flat bed gooseneck and it was very loud though. How and where did it break at?
 

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DO NOT remove it, my gfs uncle works in the turbo lab at cummins. He gave me a good reason somethin bout direction of air, and to keep the turbo from surging, and mainly to keep it in one piece. he showed me pieces of turbos where the ring was removed, it looked like someone straped a stick of tnt to it.
 

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Ok, is that plastic/foam deal that is in between the air filter and turbo the silencer ring? Or is there something else in the turbo? There's no pins that hold that thing in place.
 

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Mine was a metal chamfered ring pressed in the intake side with an extension toward the compressor turbine
 

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DO NOT remove it, my gfs uncle works in the turbo lab at cummins. He gave me a good reason somethin bout direction of air, and to keep the turbo from surging, and mainly to keep it in one piece. he showed me pieces of turbos where the ring was removed, it looked like someone straped a stick of tnt to it.
Couldnt you just say when the turbo "let go" that all the turbo housing and pieces flew apart even the ring?
 

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Probably going to put mine back in after I finish lathing a slightly different angle on in and polishing it
 

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Couldnt you just say when the turbo "let go" that all the turbo housing and pieces flew apart even the ring?
well there what a shaft, and there what what looked like a compresser housing that someone took a ginder. wasnt pretty.
 

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Oh, a grinder prob was noy the way to go.
 

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Alright, I was thinking that plastic/foam deal was the silencer ring because it also directs the airflow and quiets the whistle. Maybe somebody else knows what it's called.
You are referring to the Air Baffle. It can be removed.:thumbsup
 
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