Which is better 4 or 5 inch Exhaust for the SCT? Is the 5 worth the money? - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

 
LinkBack Thread Tools Display Modes
post #1 of 6 Old 11-19-2010, 07:34 PM Thread Starter
Powerstroke.org Fanatic
 
local851ff's Avatar
 
Join Date: Oct 2010
Location: Eugene Oregon
Posts: 100
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Question Which is better 4 or 5 inch Exhaust for the SCT? Is the 5 worth the money?

I am getting ready to make this purchase and was wondering if the 5 inch was worth the extra cash? I am planning on running an SCT in the future and want to have the optimal exhaust for that. If the difference in performance is negligible I will just stick with the 4. What do you think?

2008 F350 CC SRW
local851ff is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 11-19-2010, 09:02 PM
Compression Ignition Addict
 
SamW's Avatar
 
Join Date: Aug 2008
Posts: 484
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
you wont know a difference. 5 in is throatier, 4 inch has more whistle. other then that, there is no difference at all since the turbo provides all the backpressure

2006 F250 CCSB

6.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Thanks to FCDP and Innovative Diesel
SamW is offline  
post #3 of 6 Old 11-20-2010, 06:53 AM
Compression Ignition Addict
 
travisH3's Avatar
 
Join Date: Jul 2010
Location: Cincinnati
Posts: 4,331
Thanks: 6
Thanked 41 Times in 40 Posts
Mentioned: 1 Post(s)
Quoted: 2 Post(s)
Feedback Score: 13 reviews
i would just go with the 4 inch, i suggest diamond eye for exhuast. if you go with mbrp know that you will have a 3.5 inch down pipe unless they sell a 4 inch down pipe kit separately so if you got the 5 inch it would go 3.5 down pipe, 4 inch for a little then 5 inch the rest of the way back. diamond eye has a true 4 inch down pipe with there kit. there 5 inch kit has 4 inch dp then 5 inch cause there no way to get anything bigger than 4 inch up to the turbo.

T-rav
2010 F350 6.4-
s467 MPD single kit, H&S Jesse Byall tuning, No limit IC piping and intake,mishimoto intercooler, MPD billet CCV/oil filler, FASS with sump, SOTA A.W.O.L. polished wheels, toyo rt tires, RED Newton traction bars, oem projector retrofit and a bunch of LED lights LOL

Holderdown Performance #teamHDP

OUR FLEET: 2015 f450, 2014 Platinum F350, 2012 F450 6.7, 2010 F350 6.4, 2005 F350 6.0, 04 F450 6.0

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
travisH3 is offline  
post #4 of 6 Old 11-20-2010, 07:11 AM
Compression Ignition Addict
 
SPEEDJUNKIES750's Avatar
 
Join Date: Mar 2008
Location: New York
Posts: 184
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I have the 4" with an SCT and it runs great.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2005 F350 CC Short Bed
6.0 PSD Auto
ARP Studs sold by Raul
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

SCT X3 Tuned by Eric
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Glow Shift Triple Pillar Gauge from Raul
AFE Intake
EGR Delete
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Fleetrite ELC
4" MBRP Turbo Back
Zoodad Mod
P3 Brake Controller
2.5" Level Kit
35x12.5x20 Toyo Open Country M/T

Ya, I'm the boat guy.........
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SPEEDJUNKIES750 is offline  
post #5 of 6 Old 11-20-2010, 10:09 AM Thread Starter
Powerstroke.org Fanatic
 
local851ff's Avatar
 
Join Date: Oct 2010
Location: Eugene Oregon
Posts: 100
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Thanks for the input on the Down Pipe!!!

2008 F350 CC SRW
local851ff is offline  
post #6 of 6 Old 11-20-2010, 10:59 AM
Compression Ignition Addict
 
Crmsntide27's Avatar
 
Join Date: Feb 2008
Posts: 234
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Either one will function just the same. I had a true 4 inch and when I had some work done on it the Ford tech was telling me that the 4" downpipe is a really tight fit up by the turbo and firewall and that over time it could possibly come loose. I dono if he was just BS'n me but I went ahead and swapped it out with a 3.5" downpipe and there was no difference. He said the 3.5" will also provide slightly more back pressure.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Crmsntide27 is offline  
Sponsored Links
Advertisement
 
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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

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