Gutting the Cat, - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 11-15-2010, 03:15 PM Thread Starter
Member
 
Join Date: Sep 2010
Posts: 45
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Gutting the Cat,

Ok, so the truck has 296k miles, and some stage 1 injectors. I don't have the extra for a down pipe right now, but it seems gutting the cat would be free. Is it worth the effort? Any tips from those that have done it?

thanks in advance

Bill
loudmouth is offline  
post #2 of 8 Old 11-15-2010, 09:01 PM
Powerstroke.org Fanatic
 
Join Date: May 2010
Posts: 92
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
well from the engine to the tip is all exhaust pipe on mine completely straight all the way out no cat no muff. if you have a few buck to spend on a couple feet of pipe to feel the gap where the muffler and cat go id do it even if you keep it stock circumference. probably looking 40-50 bucks max at a muffler shop. i dont know how much if any performance i got of it but it sounds sweet as h e double hockey sticks
zombiediesel is offline  
post #3 of 8 Old 11-16-2010, 02:24 PM
Compression Ignition Addict
 
95ef2fiddy's Avatar
 
Join Date: Jul 2007
Location: Bradenton FL
Posts: 150
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
just go to napa and get u some 3inch pipe and some clamps

1997 f250 7.3
regular cab
tw chip
3 inch dp
4 inch cat delete
5% tint
glow shift gauges
6 inch cat stack
completely rebuilt kp d60
3 inch rsk
24s
38s
zf5 swap
southbend clutch
d66 turbo
4 inch skyacker springs
7 inch rear block
traction bars
bdp complete fuel system. (bowl delete and elec pump)
beans stage 2 injectors
intercooled
95ef2fiddy is offline  
post #4 of 8 Old 11-16-2010, 02:30 PM
Compression Ignition Addict
 
Soot_Life's Avatar
 
Join Date: Mar 2010
Location: geneva FL
Posts: 196
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
yes it helps... the cat doesnt really want to come off tho iwill wan you the dp bolts are practically welded on and the clamp towards the rear has formed the overlapping pipes toone another...i think the factory exauhst is 3 1/4 if my memory serves me right....

if you can get it off punch it out. if you cant cut it behind the bolts weld and clamp..

97 supercab 4x4: work truck. Reallly Loud stereo (16 speakers, none visable), 20's/35s, 6637, straight piped.
99vette: stock.
89crx, working on a idea that involves a 454 bigblock, 2.5tons, and boggers.
Custom built 12' jon boat: yea its got a 50 horse jet drive.
Soot_Life is offline  
post #5 of 8 Old 11-17-2010, 08:45 AM
Compression Ignition Addict
 
Join Date: Apr 2008
Location: Wellington Nevada
Posts: 8,706
Thanks: 1
Thanked 42 Times in 41 Posts
Mentioned: 4 Post(s)
Quoted: 3 Post(s)
Feedback Score: 5 reviews
Big difference when I did it and a Tymar intake at the same time..3mpg's! Thats with the stock exhaust system...I was very surprised at the difference in being able to pull hills faster afterwards.
CT Performance, Inc. is offline  
post #6 of 8 Old 11-18-2010, 04:38 PM Thread Starter
Member
 
Join Date: Sep 2010
Posts: 45
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Hope to be able to get this done tomorrow, a call to an ol buddy that runs a muffler shop, 30$ and he'll cut at the cat and replace past the muffler,

loudmouth is offline  
post #7 of 8 Old 11-18-2010, 05:05 PM
Powerstroke.org Fanatic
 
Join Date: May 2010
Posts: 92
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
So straight pipe from down pipe to tip or leavin in muffleri suggest cutting the mufler the sound will make you pitch a tent
zombiediesel is offline  
post #8 of 8 Old 11-19-2010, 01:59 PM Thread Starter
Member
 
Join Date: Sep 2010
Posts: 45
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
DONE, Cut it just past the flange for the converter, 3" straight dumped just before the axle, Sounds Great! I hope I can find some mileage in it also!

loudmouth 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