Bigger than 3.5 inch down pipe? - Ford Powerstroke Diesel Forum

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post #1 of 12 Old 03-07-2009, 05:19 PM Thread Starter
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Bigger than 3.5 inch down pipe?

When I went to look for exhaust systems for my truck, I was told that the down pipe in mine (06, 6.0) cannot be bigger than 3.5 inches.

I want the mbrp turbo back 4 inch. How can I get a 4 inch downpipe in there?


Also, I hear alot about people getting SCT's with tunes. I don't understand what this means?

I have a super chip, plug it in, tune it and go.
What is the difference?
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post #2 of 12 Old 03-07-2009, 06:18 PM
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I think the SCT works the same as your superchips, but the SCT can hold custom tunes on it.
Custom tunes are designed for your truck and your mods......not just over the counter sell to everybody tunes like the other mass produced tuners available.


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post #3 of 12 Old 03-07-2009, 06:30 PM Thread Starter
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Quote:
Originally Posted by alwil View Post
I think the SCT works the same as your superchips, but the SCT can hold custom tunes on it.
Custom tunes are designed for your truck and your mods......not just over the counter sell to everybody tunes like the other mass produced tuners available.
Well, what I'll probably end up doing is the exhaust, chip, and air filter and thats it.

I have 35 inch tires though and may put a 4.10 in the rear end eventually.

What kind of difference are we talkin here?
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post #4 of 12 Old 03-07-2009, 06:38 PM
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I think they take into account your gears and tires as well as exhaust, intake.
I have not ordered them yet this is just the way I understand it from other threads I have read.


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post #5 of 12 Old 03-07-2009, 06:46 PM Thread Starter
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Originally Posted by alwil View Post
I think they take into account your gears and tires as well as exhaust, intake.
I have not ordered them yet this is just the way I understand it from other threads I have read.
Lets say I get the exhaust, and a bully dog power pup, along with my air filter, how critical will it be to get apr studs and an egr delete kit? From what I've read, those two are VERY expensive. I am only 16, you see, therefore, I cannot afford some things.
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post #6 of 12 Old 03-07-2009, 10:46 PM
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That would depend on how you were going to drive it.


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post #7 of 12 Old 03-08-2009, 09:08 AM
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TRP save your money! You dont need an air filter. Stock flows enough and filters as good up to the 450-500 mark if I heard right. I have heard people buy bully dog, edge, and others and the only advantage is shift on the fly. Get an sct. It can If your worried about studs get custom tunes from Cale from Brians Truck Stop. I spent some time talking to him and he explained timing to me some and I have recently ordered 3 of his tunes. I believe his tunes will be easier on stock bolts. Another Great tuner is Eric from Innovative. I have been running his stuff for about 10k miles. They tune different and both are super guys to work with and get you what you want. As far as your exhaust, I run a 4" dp and it is a tight fit but with time and a 2x4 and a hammer it can be persuaded to fit. I dont know which vendor to recommend for that.

06 F250 4x4 ecsb, lowered 2", 6 Autometer Phantom 2 guages, Accufab Elbow, Zoodad, Airaid , Magnaflow 4"dp, 5" pipe 7" short stack, Studs, Egr delete, sneaky pipe, regulated fuel return, 6.4 banjo bolts, Moderate FICM from Innovative, High idle and foglight mods, Bilsteins, Sulastic shackles, DIY Harley headlights and traction bars. 8.76 in the 1/8th
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post #8 of 12 Old 03-08-2009, 09:24 AM
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You can run a 4" down pipe on your truck. It is tight and you have to fiddle with it to make sure it isn't contacting anything or it'll vibrate and rattle and drive you nuts. Magnaflow has a 4" down pipe with their system.
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post #9 of 12 Old 03-08-2009, 09:41 AM
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You really do not need a 4inch downpipe anyways unless you putting out some serious power.

2005 F350 CC SB ,Turbo-back Silverline 304 ss , RCD EGR delete , Elite VGT-SS turbo , SCT tunes by DJ's , cat delete , Autometer triple gauges , 20" MKW M19 , Toyo 38 x 15.50 x 20 , Icon 4-link 10in. lift , Dual Sway-a-way coilovers and shocks , Pioneer Avic F90BT, OUO Driveline Drop, CCV reroute , FS-2500 oil bypass, Mag-Hytec diff covers , Amp steps


Wanting a Cummins swap.
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post #10 of 12 Old 03-08-2009, 03:16 PM Thread Starter
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Quote:
Originally Posted by hotdog View Post
You really do not need a 4inch downpipe anyways unless you putting out some serious power.
I'd like to enventually put out almost 500 at the crank.
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