MBRP 3" down pipe
Hotshot
Joined: Jan 2012
Posts: 11,132
Likes: 3
From: Southern West Virginia
Hotshot
Joined: Jan 2012
Posts: 11,132
Likes: 3
From: Southern West Virginia
Yeah, it's 2 piece. I also did a 6637 intake and 4" straight pipe right off the down pipe. Seems to spool up pretty well and sounds sweeeet! I've only driven it once since I did all of this, I'm still doing some other stuff to the truck. I just bought it.
Postmaster
Joined: Jun 2009
Posts: 2,566
Likes: 1
From: Monroe/Ellensburg, WA
A downpipe alone isn't going to gain you much horsepower. You do need to mod the firewall a bit to get it in. A long crow bar or a portapower will do the trick. You should take a sawzall and cut the "cobrahead" of the downpipe and it will slide out the bottom.
Hotshot
Joined: Jan 2012
Posts: 11,132
Likes: 3
From: Southern West Virginia
I bought the truck with a bad E4OD trans so I did my down pipe while I had the trans out , so I didn't have to cut the old down pipe, and yes I did fold the pinch weld down (with a hammer) not much though. That will be hard to do with the trans in the way.
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Cargo Master
Joined: Jul 2010
Posts: 3,014
Likes: 115
To install the downpipe, use a porta power if you can get access to one. Make sure that you clear the heatshield/insulative material away from that pinch weld. That stuff is surprisingly strong and will reinforce the pinch weld, keeping you from getting a good bend on it. I just used tin snips to cut it away and then used the porta power to great effect.
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From: Southern AZ
harbor freight has a 10 ton portapower kit for around $200.... worth every penny.
10 Ton Portable Hydraulic Equipment Kit
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on sale right now for $180...
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