4" Down pipe - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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post #1 of 13 Old 08-13-2009, 11:19 AM Thread Starter
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4" Down pipe

At what point would it be benifical would it make more lag or less ?

06 STROKER

lots of fuel more oil and a efr
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post #2 of 13 Old 08-14-2009, 05:29 AM
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ill let you know in a few days, mines is about to go on.

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post #3 of 13 Old 08-14-2009, 06:11 AM
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Think the only benifit is more area to flow which lowers EGT's.

Tyler T
Sold 2 April 2011
To some lucky SOB
2004 6.0 CC FX4 Lariat
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post #4 of 13 Old 08-15-2009, 09:16 AM
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I have one on mine and love it. But i also have an SCT too. So i can't really tell any lag but thats just me.

Cory

1995 F-250 XLT
7.3 Powerstroke Lapis Blue Metallic SuperCab ZF5 3.55 2wd Long Bed 275k miles
3.5 from the downpipe to stock 6.4 muffler, 43367 diy intake.

1993 F250 XL RCLB Turbo 7.3 IDI zf5 2wd 223k miles; 5 inch exhaust & tint -sold-
2006 F350 Lariat Harley Interior CCSB 6.0 Powerstroke 5r110 4x4 43k miles; SCT, EGR delete, ARP studs, tint, & 5 inch exhaust -sold-
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post #5 of 13 Old 08-15-2009, 09:36 AM
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Ive been told the diff is very little, but never drove a 6.0

2006 F-250 ExtCab SB 4x4 6.0, recon white lightning, ARP head studs, SCT touch Xtreme and soon to come Complete EGR delet y pipe and all
Wifes - 2005 Liberty w/ 2.8l diesel!
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post #6 of 13 Old 08-15-2009, 12:18 PM
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I have run stock, 3.5,and 4 and couldnt tell much if any difference between them.

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 #7 of 13 Old 08-15-2009, 12:40 PM
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Originally Posted by fordfan30 View Post
I have run stock, 3.5,and 4 and couldnt tell much if any difference between them.
How do you like your exhaust? I'm getting one in the very near future but I haven't decided on the 4 or 5 inch. I'm gettin 4 inch downpipe, it's gonna be straight piped, with a big tip.

John
2006 F-350

A work in progress..
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post #8 of 13 Old 08-16-2009, 09:09 AM
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Quote:
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Ive been told the diff is very little, but never drove a 6.0
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I have run stock, 3.5,and 4 and couldnt tell much if any difference between them.
you are right, there will be very little difference from a 3.5" to a 4" maybe 50* if that and you wont even see that on the pyro gauge.

Adam Brannan

First Coast Diesel Performance

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post #9 of 13 Old 08-16-2009, 09:13 AM
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when me and my dad put the 4in dp in my dads truck it drop egts to a safe level when towing a 12k 5er. Without a load hard to tell the diff.

97
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post #10 of 13 Old 08-16-2009, 08:20 PM
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i went from a stock dp to a 4in on my 6.0 and it dropped the egts slightly, only really noticeable when pulling
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