A silencer ring is a metal baffle placed into the turbocharger inlet to reduce whistle from the turbocharger. It is installed in Ram truck engines at the request of Chrysler. The silencer ring has no effect on engine output, EGT, or boost levels.
Removal:
Remove the flex hose from the front of the turbo that goes to the breather. Just inside the turbo, you will see a snap ring that looks like a piston ring (charcoal color), very gently with a small flat blade screw driver, lift one end of the snap ring out of the groove, then continue to work around the snap ring, lifting it out of the groove. When the snap ring has been removed, you can easily remove the silencer ring.
Image on left is WITH the ring. Image on the right is WITH OUT the ring.

 

BHAF = Big Honking Air Filter
This is a very easy mod and the benefits are great ... Cooler Egts ... Better flow ... More Whistle !!!
First remove the air intake line running from your factory Air box to your Turbo
Then remove your air box ... just pull straight up
This area it leaves behind is the new home for your BHAF

Here is the Filter
They are very easy to obtain Just go to NAPA and request a NAPA - 2790
Additional part numbers for the filter are
WIX 42790
Donaldson B105006
Baldwin PA2820
Hastings AF1012
DONALDSON ECB105006
Fleetguard # AH19037
Napa # 2790
Carquest # 87790
Big A # 93790
CATERPILLAR# 3I0005
FLEETRITE # AHR819037
LUBER-FINER# LAF2531
Your factory air intake line will hook right up to the filter
Now its about $50 for the filter but you can prolong its life BIG TIME by adding a Outerwear's Prefilter Available @ www.outerwears.com its recommended that you just give them a call @ 1-800-967-3450 P/N: WR3325-105BL-$30.00 WR=water resistant BL= blue You can choose any color they have

You can take it a step further by adding a Heat Shield Here's the template And Here's a Dealer It will Keep your BHAF from drawing in heat from your turbo and also give the filter a nice little place to sit

This is what it will look like minus the Outerwear prefilter
Consider this One of those easy and cheap Mods that you will get alot from
Enjoy