Stock down pipe with 4" cat-back system? - Ford Powerstroke Diesel Forum

 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 10-07-2012, 08:30 PM Thread Starter
Compression Ignition Addict
 
Erwin8r's Avatar
 
Join Date: Jan 2010
Posts: 220
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Stock down pipe with 4" cat-back system?

I'm going to upgrade my exhaust to a 4" system with a magnaflow muffler. Will my stock down pipe flow well or should I upgrade to 3.5" or 4"? Will my EGT's be affected if I keep the stock down pipe?

Advantages? Disadvantages? I don't have much in the way of performance mods, other than an AFE intake.

Will be doing an SCT and gauge/monitoring package very shortly after the exhaust... Thx.

2003 6.0 PSD Extra Cab SB 4x4
35" Toyo MT's
ARP Studs
BPD EGR Cooler
AFE Stage 2
Rhinoliner
Big-*** Fuel Tank (47 gallon?)
Erwin8r is offline  
post #2 of 5 Old 10-08-2012, 05:26 AM
Compression Ignition Addict
 
kinnisoj's Avatar
 
Join Date: Jun 2012
Location: Trinidad Colorado ,USA
Posts: 6,085
Thanks: 136
Thanked 196 Times in 191 Posts
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
Feedback Score: 0 reviews
Im running the Diamond eye 5" TB no muffler at all. As far as egt's Im hoping to get my probe into the truck today so I cant tell ya about that. But I can say as far as installation, very easy no sweat,sound, awesome wish it was louder. Thats my .02

BPD OIL COOLER W/COLD WEATHER PACK & BPD oil bypass amsiol filter
BPD WATER PUMP, RADIATOR+ EGR.ARP STUDS
,edge turbo timer
5" TB DIAMOND EYE EXH
ATLAS 40
TITLE IN HAND...
kinnisoj is offline  
post #3 of 5 Old 10-08-2012, 08:39 AM Thread Starter
Compression Ignition Addict
 
Erwin8r's Avatar
 
Join Date: Jan 2010
Posts: 220
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by kinnisoj View Post
Im running the Diamond eye 5" TB no muffler at all. As far as egt's Im hoping to get my probe into the truck today so I cant tell ya about that. But I can say as far as installation, very easy no sweat,sound, awesome wish it was louder. Thats my .02
But what size is your down pipe?

2003 6.0 PSD Extra Cab SB 4x4
35" Toyo MT's
ARP Studs
BPD EGR Cooler
AFE Stage 2
Rhinoliner
Big-*** Fuel Tank (47 gallon?)
Erwin8r is offline  
post #4 of 5 Old 10-08-2012, 09:29 AM
Premium Member

 
portcity_gt's Avatar
 
Join Date: Apr 2008
Location: shreveport, la.
Posts: 5,999
Thanks: 2
Thanked 253 Times in 222 Posts
Mentioned: 28 Post(s)
Quoted: 554 Post(s)
Feedback Score: 0 reviews
I'm running a stock down pipe, I'm almost positive it's 3.5 stock. It then Y's out into 6" side pipes, I havnt had any trouble.
portcity_gt is offline  
post #5 of 5 Old 10-08-2012, 09:36 AM Thread Starter
Compression Ignition Addict
 
Erwin8r's Avatar
 
Join Date: Jan 2010
Posts: 220
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
So other than size with a larger aftermarket down pipe, what are the advantages of an aftermarket down pipe--especially if one goes with a 3.5" down pipe?

And what helps lower EGT's--the down pipe or the over size exhaust with no cat?

2003 6.0 PSD Extra Cab SB 4x4
35" Toyo MT's
ARP Studs
BPD EGR Cooler
AFE Stage 2
Rhinoliner
Big-*** Fuel Tank (47 gallon?)
Erwin8r is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the 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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



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