Cats -

4.6L V8 Technical Discussions Any questions about engine, transmission, or gearing can be asked here!
Sponsored by:
Sponsored by:

Thread Tools Search this Thread
Old 02-28-2014, 12:58 PM   #1
2nd Gear Member
Thread Starter
Join Date: Jun 2008
Posts: 194
Default Cats

08 GT 172,000 miles. Original cats. Want to replace with quality high flow cats. However, I don't want to replace any of the stock exhaust, just from the manifolds to the mid H pipe. Are there catted connection pipes for this app? I see them for the 10-13 model years.
rocky321 is offline   Reply With Quote
Old 02-28-2014, 07:20 PM   #2
3rd Gear Member
Ricardo's Avatar
Join Date: Oct 2009
Location: Utah
Posts: 730

Just get a catted X/H pipe. They're not expensive. By the time you get two high flow cats and have them spliced in you're at the cost of buying an x/h pipe and doing it yourself.

edit: Nevermind, looks like prices went up and seems to be hard to find any catted h pipes. Most exhaust shops will not remove cats from a car or they face a huge fine per Federal law . If you find one that will, just get some SLP cats and have them spliced in.

Last edited by Ricardo; 02-28-2014 at 07:25 PM.
Ricardo is offline   Reply With Quote
Old 02-28-2014, 08:03 PM   #3
4th Gear Member
SpartaPerformance's Avatar
Join Date: Apr 2010
Location: Long Island, New York
Posts: 1,291

Why would you want to replace them? Factory cats are pretty high flow and if yours are still working why bother.
SpartaPerformance is offline   Reply With Quote
Old 02-28-2014, 08:55 PM   #4
4th Gear Member
danzcool's Avatar
Join Date: Oct 2008
Location: CA
Posts: 1,857

At 172K miles, the cats probably are pretty used up, so I think his thoughts are that if he's going to replace them anyway, why not go to high flow...

have no suggestions other than find some weld-in ones and have an exhaust shop do it for you.
danzcool is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Aluminum / performance intake 97 GT 4.6 help Vrooom 4.6L General Discussion 13 02-21-2016 05:25 PM
Exhaust cutouts ak98 GT S197 General Discussion 10 10-19-2015 12:13 AM
Steeda S550 Mustang GT Axle-Back Exhaust with Aftermarket H-pipe (15-16 GT) [email protected] Steeda Autosports 0 09-24-2015 09:18 PM
Really scary throttle issue, Bullitt tuning or something wrong here. JDWalton 4.6L V8 Technical Discussions 8 09-24-2015 08:47 PM
O/R H pipe install car is now stalling when coming to a stop trashxtrash 4.6L (1996-2004 Modular) Mustang 4 09-20-2015 10:49 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 06:23 PM.