Pre cat delete -
LinkBack Thread Tools
post #1 of 2 Old 05-26-2013, 06:53 PM Thread Starter
Registered User
2005 TJ Wrangler 
Join Date: Jul 2012
Location: San Antonio
Posts: 64
Pre cat delete

Hi all, I have an 05 wrangler I6 with the California emissions package on it. This is the exhaust that has 2 pre cats that go into a third cat then back to muffler. I want to get rid of the pre cats. My question is can I just run a down pipe from a 2000 model in place of the pre cats and have a muffler shop drill and nut two holes for the O2 sensors on the pre cats? Will this throw a code? I have a huge dent in one of the pre cats and I feel it might be robbing power and fuel mpg. Any other suggestions on how to delete the pre cats? I'm in texas so it will pass inspection with just the 3rd cat. Thanks in advance.


afguy1980 is offline  
Sponsored Links
post #2 of 2 Old 05-27-2013, 06:09 AM
Senior Member
Newtons3's Avatar
2006 TJ Wrangler 
Join Date: Feb 2013
Location: Baton Rouge
Posts: 925
Yes, you can. It wont normally throw codes, but it can.
Newtons3 is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

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 Off
Pingbacks are On
Refbacks are On

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