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Old 10-31-2008, 05:40 PM
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Exhaust For an OBS?

I'm in the market for an exhaust for my truck, but I am very hesitant about getting an ehaust for my truck because of the downpipe.

Now I'd like to known who you think makes the best exhaust for my OBS.
What I mean by best is an exhaust that installs the easiest, fits the best, is made out of Stainless, and the price is somewhat reasonable.

Also I want to know how much work it took to put an exhaust on your OBS.
Pics of the downpipe of your truck would help alot!
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Old 10-31-2008, 06:16 PM
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Exhaust wise I really like Dymond Eye Exhaust. Now for instalation I firt unbolted the down pipe for the turbo. Then disconnected everything behind the down pipe. I then used a sawl saw cut my down pipe in 2 spots pulled it out. then Droped the upper new down pipe in and ran the clamp back on the turbo just enough so I could move it then I installed the lower down pipe with an exhaust clamp and then so forth deffintely worth replacing that flat down pipe. I have full exhaust no cat no muffler and love it.
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Old 10-31-2008, 06:25 PM
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the down pipe is really the hardest part you have to cut the stock dp at the neck and then remove then you have to do a little firewall modifieing, using a porta press really makes it a lot easier. but as far as which exhaust is they best that i don't know but i like the looks of the mbrp
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Old 10-31-2008, 06:35 PM
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These guys claim that you dont need a porta-power to install there down pipe.
Diesel Truck Performance Parts & Accessories
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Old 10-31-2008, 06:42 PM
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Thanks for the replies fellas,
Today I got the latest issue of Diesel Power and they installed an 4" MBRP exhuast on an OBS and they showed a picture of the downpipe and the caption said they had to move a trans cooler line along with beating in the firewall.
Has anyone ran into a problem with trans cooler line when putting in their exhaust?

Also Rantheman you don't mention any beating of the firewall, so I take it that didn't have to beat it. Right? And how much did you pay for your diamond eye?
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Old 10-31-2008, 08:13 PM
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Actually I kinda did with a 2X4 and pryd to get my cut in so yeah I did a little m diamond eye kit was 260 bucks turbo back but you can look here to find what you want

Products: Ford Powerstroke Diesel > Exhaust Systems
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Old 10-31-2008, 08:14 PM
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Oh and as far as i know without a body lift or major surgery to some sheet metal I don't think you could wedge a 4" down pipe in there
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Old 10-31-2008, 09:00 PM
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i had a diamond eye performance exhaust on mine for the downpipe I cut at the bottom and up near the turbo to remove the stock downpipe and then used a 2x4 to pry out the firewall and the new one fit in just fine
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Old 10-31-2008, 09:30 PM
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I love my 6" miter cut stacks!!! Talk to Gus @ farmboydiesel
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Old 10-31-2008, 10:37 PM
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yep like chuck said get some 6" stacks!!!
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