Engine loud on decel after downpipe install
Postmaster
Joined: Dec 2012
Posts: 2,604
Likes: 3
From: Fort Polk Louisiana
Beside cutting that well where the dp goes through, there aren't really very many options except to accept a small downpipe, and a bigger exhaust to push the volume out. I guess it's better than pushing all the exhaust out a single 3" straight pipe. Looks like I might need to log some lift time at the garage on post!
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Senior User
Joined: Jan 2003
Posts: 241
Likes: 0
From: Redding, Ca USA
Got it done hopefully....luv doing the job twice. As a bonus it got some metal shavings in me eye....don't know how they got behind my safety goggles....but Easter Sunday morning sitting in the ER waiting to get them out. ...good times. ....this is why I don't like working on my truck
Cargo Master
Joined: Feb 2009
Posts: 2,111
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From: Yreka, CA
Got it done hopefully....luv doing the job twice. As a bonus it got some metal shavings in me eye....don't know how they got behind my safety goggles....but Easter Sunday morning sitting in the ER waiting to get them out. ...good times. ....this is why I don't like working on my truck
Postmaster
Joined: Dec 2012
Posts: 2,604
Likes: 3
From: Fort Polk Louisiana
Got it done hopefully....luv doing the job twice. As a bonus it got some metal shavings in me eye....don't know how they got behind my safety goggles....but Easter Sunday morning sitting in the ER waiting to get them out. ...good times. ....this is why I don't like working on my truck
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Diamond Eye kits are 3" DP and go to 4" at the cat/cat delete pipe.
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Postmaster
Joined: Dec 2012
Posts: 2,604
Likes: 3
From: Fort Polk Louisiana
Well, I took a look again at the kit, it's a 2 piece DP, so if I would rather put a small bend in the pipe to make it fit, than to cut up the body like that..
Oh daaaaum, what was all that for anyway? Looks like a lot of repair work!
Oh daaaaum, what was all that for anyway? Looks like a lot of repair work!
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FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
BTW IIRC that work in the pics was to fit a 4" DP
Postmaster
Joined: Dec 2012
Posts: 2,604
Likes: 3
From: Fort Polk Louisiana
Dont put a small bend in the pipe, the main reason to change the stock DP is to obtain a better flow, if you put the bend it theretically will reduce the flow, and it surely is 3" and with some massage in the fire wall, it will fit.
BTW IIRC that work in the pics was to fit a 4" DP
BTW IIRC that work in the pics was to fit a 4" DP
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Every OBS aftermarket down pipe sold that I'm aware of is a 2 piece design because there just isn't much room to work with there. Cut the old one out, push the firewall in with whatever method you desire, and install the new one. No need to cut anything, or bend the new down pipe, or any of that nonsense.
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Those pics were taken by a friend of mine (strokersace) a few years ago when he was swapping parts from his SD to his OBS. He converted the motor over to SD accessories and wanted to run the SD down pipe (4") and what you see is what it takes to make an SD down pipe fit in an OBS truck. It still rubbed on the frame so he had to dimple it there as well. He said that if he had to do it again, he wouldn't... too much work.
Every OBS aftermarket down pipe sold that I'm aware of is a 2 piece design because there just isn't much room to work with there. Cut the old one out, push the firewall in with whatever method you desire, and install the new one. No need to cut anything, or bend the new down pipe, or any of that nonsense.
Every OBS aftermarket down pipe sold that I'm aware of is a 2 piece design because there just isn't much room to work with there. Cut the old one out, push the firewall in with whatever method you desire, and install the new one. No need to cut anything, or bend the new down pipe, or any of that nonsense.
Postmaster
Joined: Dec 2012
Posts: 2,604
Likes: 3
From: Fort Polk Louisiana
Those pics were taken by a friend of mine (strokersace) a few years ago when he was swapping parts from his SD to his OBS. He converted the motor over to SD accessories and wanted to run the SD down pipe (4") and what you see is what it takes to make an SD down pipe fit in an OBS truck. It still rubbed on the frame so he had to dimple it there as well. He said that if he had to do it again, he wouldn't... too much work.
Every OBS aftermarket down pipe sold that I'm aware of is a 2 piece design because there just isn't much room to work with there. Cut the old one out, push the firewall in with whatever method you desire, and install the new one. No need to cut anything, or bend the new down pipe, or any of that nonsense.
Every OBS aftermarket down pipe sold that I'm aware of is a 2 piece design because there just isn't much room to work with there. Cut the old one out, push the firewall in with whatever method you desire, and install the new one. No need to cut anything, or bend the new down pipe, or any of that nonsense.
Well, The pipe will just have to sit around for a little bit, Putting it on isn't going to be a high priority just yet. But thanks again for clearing that up about the DP, had me a little concerned for a second that a messed up and got the wrong exhaust.
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