Exhaust questions - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-23-2010, 10:54 AM
Emergency Services
 

Join Date: Jan 2008
Location: College Station, TX
Posts: 558
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Exhaust questions

I'll be replacing my factory DP with a 3" DP soon and figured while I was at it I'd go ahead and do a larger straight pipe dumping before the rear tire. I have factory piping now just with muffler and cat deletes. I hear I won't really gain much from larger straight pipe but I love the sound of a 5" exhaust at idle. Is there any gain to going with a 3"-5" coupling at the end of the DP and going 5" til the rear tire or should I just do 4" and get a 5" or 6" tip? Any thoughts? Thanks.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 03-23-2010, 10:57 AM
Cynic
 

Join Date: Jun 2007
Location: Fort Worth, Texas
Posts: 11,194
Thanks: 0
Thanked 3 Times in 2 Posts
Feedback Score: 0 reviews
On the OBS, the DP upgrade is the only thing you will notice.

Even on the superduty, removing the muffler\cat and using the stock exhaust will be the same as getting a 4in or larger setup. The turbine outlet flange is under 3in anyways, so you aren't moving any more air that can come out of it.
Reply With Quote Quick reply to this message
  #3  
Old 03-23-2010, 10:59 AM
Emergency Services
 

Join Date: Jan 2008
Location: College Station, TX
Posts: 558
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Dirk View Post
On the OBS, the DP upgrade is the only thing you will notice.

Even on the superduty, removing the muffler\cat and using the stock exhaust will be the same as getting a 4in or larger setup. The turbine outlet flange is under 3in anyways, so you aren't moving any more air that can come out of it.
Right, like I mentioned I don't expect any performance from going larger straight pipe it's more just for looks and some sound. Would it be cheaper for me to go 3" DP to 4" straight pipe and the tip of my choice then?
Reply With Quote Quick reply to this message
  #4  
Old 03-23-2010, 11:13 AM
Cynic
 

Join Date: Jun 2007
Location: Fort Worth, Texas
Posts: 11,194
Thanks: 0
Thanked 3 Times in 2 Posts
Feedback Score: 0 reviews
It would be cheaper to use the stock pieces that you have and add a larger tip. I'm not sure how much "louder" moving to a 4in would be. I do know that having a full 5in setup will have an annoying droning sound in the cab.

Also, as far as the tip is concerned.. I didn't notice my exhaust being any different with or without the kit.

My setup:

Turbine outlet flange is 3.25in going to a full 4in Magnaflow SS without a muffler to the rear of the truck. I have a nice 5in MBRP 12 or 16in long tip.
Reply With Quote Quick reply to this message
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:

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
Display Modes

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



All times are GMT -8. The time now is 09:08 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors