Muffler Install Question
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Freshman User
Joined: Feb 2006
Posts: 43
Likes: 0
From: Elroy, Wisconsin
Muffler Install Question
Just got my new 4" exhaust, turbo back. Looking at the exhaust, I can't tell which way it should be installed. If anyone out there can please help me. The dimples inside the straight thru exhaust are rough in one direction and smooth in the other direction. Which way should I put it on? Thanks in advance
Fleet Mechanic
Joined: Feb 2005
Posts: 1,797
Likes: 1
From: Northern Colorado
On my MBRP instructions, the only thing it said about the muffler was that if you point the raised portion of the dimples towards the tip, more noise outside, less in the cab. Visa versa if you point the smooth side towards the tip. I opted for the less cab noise but like kwik said, it doesn't matter as far as performance goes.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
I asked Mark R this exact question when I ordered my 5" system and he stated that I should install it per the arrows on the muffler (muffled dimples facing inlet) or just get a straight pipe. Made sense to me.
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
the direction that would "catch" the airflow in the dimples really quiets the turbo noises. of course i didn't want that, and i put it smooth side towards turbo. now it's sitting on the upper deck in the shop.
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Elder User
Joined: Dec 2005
Posts: 703
Likes: 1
From: Middle of a field CT
save yourself the trouble of all that muffler bs and straight pipe that rig
not that much louder but you'll love the sound
not that much louder but you'll love the sound
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Posting Guru
Joined: Jan 2006
Posts: 1,605
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From: Elkhorn, WI
Originally Posted by powrstrkn'
save yourself the trouble of all that muffler bs and straight pipe that rig
not that much louder but you'll love the sound
not that much louder but you'll love the sound
Posting Guru
Joined: Jan 2006
Posts: 1,605
Likes: 1
From: Elkhorn, WI
Originally Posted by beeglej
Is there a good place to get a muffler delete pipe for the 4 inch MBPR I have looked on Xtreme Diesel but could only find SS for the Dodge and I have aluminized.
www.blackclouddiesel.com is where i got mine