Stock vs. Aftermarket Downpipe - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 02-11-2009, 09:54 PM Thread Starter
The Ontaribertan.
 
Sluther's Avatar
 
Join Date: Jan 2009
Location: Edmonton, Alberta
Posts: 213
Stock vs. Aftermarket Downpipe

Hey guys,

I hope this thread doesn't sound too repetitive but I've been seeing a lot threads about bigger downpipes and their advantages. I have a 4" straight pipe with a cat and muffler delete but a stock downpipe. I got a really good deal on the pipe but the guy didn't have the machinery to bend a 4" downpipe, saying that its harder for powerstrokes then other trucks. What I am wondering is how much benefit I will actually see if I buy say a 4" DP from MBRP. Will it just give me a bit lower of a tone? Or will it actually make a big difference restriction wise and give me noticeably lower EGTs. Anything advice helps and once again, sorry if this is repetitive.

SOLD -- 2000 F250 7.3 RegCab 4x4

2001 F250 SCSB 4x4 Lariat 120k -- 2.5" Levelled, Duelers on 20in Fuel Octanes, K&N Intake, MBRP 4", DP Tunes, AutoMeter Ultra-Lites.

1971 Chevelle 454 SS Clone -- Father/Son restoration
Sluther is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 02-11-2009, 10:06 PM
PSN Veteran
 
secondarychaos's Avatar
 
Join Date: Apr 2008
Location: Grass Valley, CA
Posts: 2,448
Re: Stock vs. Aftermarket Downpipe

It would give you a noticeable difference in EGT's and spoolup time.
the stock downpipe at the smallest point is about 1"x3" square, and going through a tight bend at the same time. it's the most restrictive POS i've ever seen on a factory system.

Dan
96 Powerstroke: 6637, downpipe to dump exhaust, 140v IDM and a shift kit.

84 Honda Sabre V65 1100: pipes, jet kit and new tires. Faster than I think I'll ever need.
secondarychaos is offline  
post #3 of 4 (permalink) Old 02-11-2009, 10:41 PM
PSN Veteran
 
PHPDiesel's Avatar
 
Join Date: Nov 2007
Location: Sheep drive capital of the world, MT
Posts: 2,411
Re: Stock vs. Aftermarket Downpipe

Dan,

I think that you're thinking of an OBS downpipe.

The stock SD downpipe (his sig. lists a 2000 truck) is a constant 3" diameter......which by the way, is the size of the aftermarket downpipes for the OBS trucks.....of which some of those make big power.

If you WANT a larger downpipe, go for it. It's not really THAT important for mild trucks.

Cody
PHPDiesel is offline  
 
post #4 of 4 (permalink) Old 02-11-2009, 10:45 PM
PSN Veteran
 
secondarychaos's Avatar
 
Join Date: Apr 2008
Location: Grass Valley, CA
Posts: 2,448
Re: Stock vs. Aftermarket Downpipe

Oh :P gotcha.
I know that Mine was puny and weak.

Dan
96 Powerstroke: 6637, downpipe to dump exhaust, 140v IDM and a shift kit.

84 Honda Sabre V65 1100: pipes, jet kit and new tires. Faster than I think I'll ever need.
secondarychaos is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the PowerStrokeNation : Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome