Basic Bolt Ons: Cat back exhaust systems - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace

Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus First Generation > DURATEC Performance (2003-2007)

DURATEC Performance (2003-2007) The place to chat about any Duratec 23, 23E, and 20 engine performance, tuning and exhaust related upgrades.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 03-20-2009, 05:23 PM   #1
warneej's Avatar
Join Date: Mar 2005
Fan#: 20372
Location: Bradenton, FL
What I Drive: 04 ZX3 D23E-10SES Sedan-12 Ti Hatch

Posts: 13,167
Points 32,462, Level 100
Points: 32,462, Level: 100 Points: 32,462, Level: 100 Points: 32,462, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 201 warneej Excellent Standing Member warneej Excellent Standing Member warneej Excellent Standing Member
Buy-Sell-Trade Rating: (12)
Basic Bolt Ons: Cat back exhaust systems

The next thing most people install on their cars is an aftermarket exhaust to help it breathe better to free up a few ponies as well as give it a sportier tone. Headers are covered in a different topic. All these models will fit all Duratec motors unless otherwise specified. The only exception are those with the factory 06-07 Street Appearance Package which may require a little modification.

Common brands are:


Borla (discontinued)
FocusSport regular and stealth models
NEW!Ford Racing (2012 Only)

"Lunchbox delete"

There is also always the option of having a system custom ran at a local shop. Make sure you are specific about exactly what you want done so you don't end up with a cheap muffler and 1" rusty tubing.

There are many issues to discuss when talking about cat back systems. Here are a few of them.

One thing an aftermarket system will always have over stock is a distinctive sound. Sound is a personal choice, whether you want it to be loud and deep or quiet and rumbling, there is a cat back setup for you.

Many systems are much louder than stock. When this becomes a problem especially when combined with a race header, you have a few things you can do to quiet your system down. FocusSport offers a stealth option which adds a larger resonator to the system, Trubendz offers the ability to customize your set up by choosing your own muffler and resonator.

This is to me one of the most important aspects of a an exhaust system. To start with, when choosing your setup, you need to take into consideration some of your future plans. If you are planning on staying relatively mild and just using bolt ons, then a 2.25” system will be more than enough for you. However, if you plan on a serious N/A build or the use of forced induction, a 2.5” system will provide much better gains. Borla, MBRP and Trubendz make the best 2.5” cat back systems

Cat back setups can run anywhere from $125 all the way up to $650, its up to you what you want to spend. The gains are not increased by spending more however the advantages of Stainless Steel (especially in northern climates) are well worth the money.


Trubendz Exhaust System Install on a 08' Sedan

Exhaust Videos and Sound Clips

Comments, discussion, and corrections welcome!

Disciple of the "Push harder, suck less" school of autocross.

crew #6

Last edited by warneej; 07-15-2011 at 08:58 PM.
warneej is online now  
    Reply With Quote

Bookmarks & Social Networks

Quick Reply

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS 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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email 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.

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Borla 2.5" Cat Back exhaust and RT Highflow Cat bushmasterguy SVT Performance (2002-2004) 40 11-19-2011 12:22 AM
Other then basic bolt ons... sc0tty8 ZETEC Performance (2000-2004) 7 09-11-2005 04:06 AM
Straight Pipe for cat back Brandonsask8er ZETEC Performance (2000-2004) 12 12-27-2004 03:06 PM
cat back exhaust systems? chadnls SVT Performance (2002-2004) 1 11-04-2003 07:39 PM
trouble removing cat back FoRdFoCuZdRiVeR ZETEC Performance (2000-2004) 24 09-08-2003 03:23 PM

All times are GMT -5. The time now is 10:29 PM.

Copyright 2002-2014 All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat