DP ???? - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 03-19-2012, 09:27 AM Thread Starter
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DP ????

Hey guys I'm about to get a single stack in the truck but befor I do should I upgrade the down pipe or just run the stock one?? If so where a good place to get one
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post #2 of 6 Old 03-19-2012, 12:31 PM
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I'm pretty sure most of the turbo back kits come with an upgraded DP. Some are 3.5" and some are 4" although I don't know of many running a 4" DP. You just have to read what the kit you're interested in says.

I know I've been looking at running a dual stack set up so that's also what I look for in a kit.

04 F350 SC LB: Warren Stock+ injectors, Sinister coolant filter, DC Power 185 amp alternator, EDGE Insight CTS w/ EGT, Diamond Eye 5" turbo back straight pipe, S&B intake, MTW Hybrid w billet wheel, Riff Raff boots, Studded, Strokers Unlimited fuel RR system
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post #3 of 6 Old 03-19-2012, 12:39 PM Thread Starter
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i was just wondering if the dp is worth the money. Or should i just use my stock dp an get the single stack kit i found from a vinder on his site.
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post #4 of 6 Old 03-19-2012, 12:45 PM
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Like I said, it just depends on the kit. If it's a turbo back kit, it'll come with one, you just have to look at the description of the kit. If it's a cat back kit, that's when you'd have to consider upgrading or keeping your stock dp.

If its a 4" kit, its debatable to just buy a bigger dp. If you're looking at a 5" kit, then you prob want to, because you'd have the stock 3" dp opening into 5" pipe.

These are all just my personal thoughts and opinions though, I'm sure someone with some more knowledge on the subject will chime in also.

04 F350 SC LB: Warren Stock+ injectors, Sinister coolant filter, DC Power 185 amp alternator, EDGE Insight CTS w/ EGT, Diamond Eye 5" turbo back straight pipe, S&B intake, MTW Hybrid w billet wheel, Riff Raff boots, Studded, Strokers Unlimited fuel RR system
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post #5 of 6 Old 03-19-2012, 01:53 PM Thread Starter
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Ya if i was going to get a turbo back i no it would come with the dp. im going to order the single stack kit from FTE diesel and they have the flex pipe adapters for stock to 5inch dp. So just wanted to no if it would do me any good to change the dp would i see a big change in a aftermarket one or not..Thanks guys
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post #6 of 6 Old 03-20-2012, 05:15 AM
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From stock to a 4" DP you should see a pretty considerable drop in EGTs since there will be quite a bit of less restriction after the turbo, it also should spool a little quicker. I am thinking that when I do my injectors, I might take off the exhaust manifolds and port match, ceramic coat them, and a good cleaning of course, to spool the turbo quicker also. Just some food for thought.

08 F350 CCSB Lariat - massaged exhaust, MiniMaxx, AFE Stage 2, Flo-Pro CAC pipe, CCV modded 2" leveling kit. soon to come - EGR delete, sinister intake elbow

Traded in 06 F350 CCLB - 5" diamond eye exhaust, sct (removed before selling), coolant filter, high idle
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