best down pipe/ installation tips; 1996 250 - Ford Powerstroke Diesel Forum
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Old 12-09-2012, 04:59 PM
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best down pipe/ installation tips; 1996 250

I'm sure this question has already been answered, but im looking to swap out my stock flat down pipe for a 3" pipe.
however I'm leaving my stock cat in it and some aftermarket dps wont fit onto the factory cat. (MBRP)

my questions are:

Which is the best dp to go with? (since some modification will be needed to get the down pipe onto my factory cat)

also what modifications have y'all encountered swapping down pipes?

any help is appreciated,
thanks!
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Old 12-09-2012, 07:32 PM
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If you use the search you will find a bunch of threads about it.
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Old 12-09-2012, 08:56 PM
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I don't know for the stock cat. But I think the Diamond eye one will bolt right up. basically just the cut the old one out, cut the pinch weld on the firewall a bit, bend the firewall up a little and slip the new one in.
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Old 12-09-2012, 10:59 PM
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Why not delete the cat and let your truck breathe and live a happy life?

Sent from my SAMSUNG-SGH-I847 using AutoGuide.Com Free App
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Old 12-10-2012, 04:21 AM
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I just posted this in another thread but when i was installing mine i wish i had this info so i'll just post again.
When you decide to upgrade the factory pancake downpipe, find a scissor jack and use it to push your firewall in a little bit. This will save you a ton of time and frustration.
I spent quite some time trying to fit my diamond eye DP in there and it was not going to fit, but as soon as i used the scissor jack and moved the firewall it fit just fine.
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Old 12-10-2012, 09:49 AM
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now thats a great idea, i used an air hammer and cut the pinch weld out with it fit fine after that, i used a diamond eye and it went rite on to my factory cat, good luck with yours bud
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Old 12-19-2012, 07:46 AM
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when you guys do add an aftermarket down pipe, do you remove all of the insulation from the bottom/firewall area of the cab?
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Old 12-19-2012, 02:04 PM
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Quote:
Originally Posted by Buck Futter View Post
I just posted this in another thread but when i was installing mine i wish i had this info so i'll just post again.
When you decide to upgrade the factory pancake downpipe, find a scissor jack and use it to push your firewall in a little bit. This will save you a ton of time and frustration.
I spent quite some time trying to fit my diamond eye DP in there and it was not going to fit, but as soon as i used the scissor jack and moved the firewall it fit just fine.
I wish I had thought of that...
I bought a porta power and used the duckbill to push the firewall back.
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Old 12-27-2012, 06:46 PM
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Quote:
Originally Posted by wishIhada5.0 View Post
when you guys do add an aftermarket down pipe, do you remove all of the insulation from the bottom/firewall area of the cab?
I am really fretting about this. Am collecting pictures of this so I can focus on the exact area needing clearancing and how to do it the least destructively as possible.
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Old 12-27-2012, 06:57 PM
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i bought a $26 air hammer at home depot, came with 4 bits, cut the weld in 2 spots and used the handle from my floor jack to bend it down by prying on the motor (bent my floor jack handle btw), you will need to cut the cobra head off the stocker to pull the rest down, took me a while but i used short blades, long blades would have made a lot quicker work
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