MBRP exhaust
FTE Fan
Joined: Jun 2007
Posts: 344
Likes: 1
From: Winder, Georgia
I lack mechanically inclined friends. It was a lot of "back" time and supporting parts with the knees! But, it got done. The lift on the truck made access a ton easier.
Thread Starter
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Mountain Pass
Joined: Apr 2011
Posts: 170
Likes: 0
From: Southern California
Mine only has the Fabtech leveling kit on the front to make it the same height as the back. I actally really like it. You get that feeling of it being lifted, but it's not actually.
I have a friend that can help hold the exhaust while I work it in, but I just wasn't sure if it was as simple as unbolting it from the turbo (above or from below??) unhooking it from the hangars and then putting the new one in.
I have a friend that can help hold the exhaust while I work it in, but I just wasn't sure if it was as simple as unbolting it from the turbo (above or from below??) unhooking it from the hangars and then putting the new one in.
FTE Fan
Joined: Jun 2007
Posts: 344
Likes: 1
From: Winder, Georgia
Mine only has the Fabtech leveling kit on the front to make it the same height as the back. I actally really like it. You get that feeling of it being lifted, but it's not actually.
I have a friend that can help hold the exhaust while I work it in, but I just wasn't sure if it was as simple as unbolting it from the turbo (above or from below??) unhooking it from the hangars and then putting the new one in.
I have a friend that can help hold the exhaust while I work it in, but I just wasn't sure if it was as simple as unbolting it from the turbo (above or from below??) unhooking it from the hangars and then putting the new one in.
Cross-Country
Joined: Mar 2006
Posts: 72
Likes: 0
I went with the 4" MBRP (with muffler) and I am happy with it. Sound is not that noticeable inside the truck. I think the turbo output is 3-3.5", so I'm not sure there would be a big difference in power between the 4" & 5". I would recommend using band clamps like these - JEGS Preformed Stainless Steel Exhaust Band Clamps - JEGS instead of the ones that come with the kit so future disassembly will be easier.
You will probably need adapters welded on to the cat to get the stock size up to 4".
You will probably need adapters welded on to the cat to get the stock size up to 4".
Cargo Master
Joined: Oct 2011
Posts: 2,958
Likes: 4
From: Denver, NC
I have the Dual 4" System w/converter re-installed (NC has annual inspection) & love it !!
The install was easy, everything fit perfect (all hangers pre-welded & clamps provided) the only thing that sucked was getting the original down-pipe out w/out cutting it, that was tricky & involved some cuss words..lol
I love the sound, its very aggressive but not too loud (above 2k RPM & she is a lively soundin Devil)....Thanks MBRP
Yes i know it needs a bath
The install was easy, everything fit perfect (all hangers pre-welded & clamps provided) the only thing that sucked was getting the original down-pipe out w/out cutting it, that was tricky & involved some cuss words..lol
I love the sound, its very aggressive but not too loud (above 2k RPM & she is a lively soundin Devil)....Thanks MBRP
Yes i know it needs a bath
Senior User
Joined: Apr 2011
Posts: 249
Likes: 0
From: Eastern Oregon
I'm not so much concerned about loudness. I do have to be a little careful because if it's too loud, the police will want to check to make sure I'm legal. I was looking at MBRP's turbo back system for the cat and then get the cat delete test pipe for when I'm not having to get it smogged.
Senior User
Joined: Apr 2011
Posts: 249
Likes: 0
From: Eastern Oregon
I have the Dual 4" System w/converter re-installed (NC has annual inspection) & love it !!
The install was easy, everything fit perfect (all hangers pre-welded & clamps provided) the only thing that sucked was getting the original down-pipe out w/out cutting it, that was tricky & involved some cuss words..lol
I love the sound, its very aggressive but not too loud (above 2k RPM & she is a lively soundin Devil)....Thanks MBRP
Yes i know it needs a bath
The install was easy, everything fit perfect (all hangers pre-welded & clamps provided) the only thing that sucked was getting the original down-pipe out w/out cutting it, that was tricky & involved some cuss words..lol
I love the sound, its very aggressive but not too loud (above 2k RPM & she is a lively soundin Devil)....Thanks MBRP
Yes i know it needs a bath
Thread Starter
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Mountain Pass
Joined: Apr 2011
Posts: 170
Likes: 0
From: Southern California
My only concern is if I have to install the stock cat, how much cutting will be invovled. Is the stock system 3 1/2" or 4"? I am heading towards doing the test pipe and then putting the cat in for smog testing then swapping it back out.
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Senior User
Joined: Apr 2011
Posts: 249
Likes: 0
From: Eastern Oregon
3 1/2"on the stock pipe. Thank god i live in a part of my state that doesnt do the testing. If i did i wouldnt mess with the CAT just cause i wouldnt want to have to get under my truck just for inspection purposes.
New User
Joined: Feb 2012
Posts: 4
Likes: 0
I have a magna flow 5" system with a 3.5" down pipe and took out the cat and muffler. it's very easy to put the cat in and out if you need to for emissions. Either way I should of gone with a smaller down pipe as I lost alot of torque.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,604
Likes: 148
From: SE Georgia
A bigger downpipe/exhaust will only help lower EGT's...to a point. Then you are just putting big pipes on for no reason
The stock downpipe is 3.5"...but it's crimped and has flow restrictions
Cargo Master
Joined: Oct 2011
Posts: 2,958
Likes: 4
From: Denver, NC
LMAO that u picked that out of the pic...Yes its my father-in-laws gas'r that he "tries" to pull a 5th wheel with. 
Cargo Master
Joined: Oct 2011
Posts: 2,958
Likes: 4
From: Denver, NC
Very EASY...you make 1 cut 4 inch's or so from each end of the Converter, i used a sawz-all & it literaly took 2 min, the pipes MBRP supplys fit to the Cat perfectly if u order the kit thats designed to re-install the Cat with as i did