Welcome to the North American Subaru Impreza Owners Club Thursday October 17, 2019
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.

* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Thread Tools Display Modes
Old 01-17-2004, 01:33 PM   #1
Scooby Newbie
Member#: 40725
Join Date: Jul 2003
2002 WRX

Default emissions crap: i need a cat - how should I do this?

emissions crap: i need a cat - how should I do this?

Too bad that are strict emissions testing here in Ontario Canada. Now I need to sell my Helix downpipe and find another option. I have my up-pipe out too.

There are a few options that I have in mind:

1) get a scoobysport or bosal DP that leaves the stock midpipe in with its 3rd cat. But that leaves me with the stock 2" diameter and the restrictive stock cat. I assume there aren't much gains to be made here??

2) Some sort of HIGHFLOW cat. The only ones I know of are RandomTech and TurboXS. I think this maybe the way to go, but I don't know if this ONE cat will replace the function of all 3 that I will rip out??

3) just the cat back + up-pipe....this will suck. Probably not really an option, but a possibility.

thanks guys!
* Registered users of the site do not see these ads.
aznfoos is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-17-2004, 02:03 PM   #2
Scooby Specialist
Member#: 23796
Join Date: Sep 2002
Location: Delaware/PA border
2006 STi


Using just TXS midpipe cat will not get you through insp. My car throws a CEL only having the midpipe cat(TXS). Maybe you should do what I'm gonna do. Leave the catless uppipe on car but reinstall the stock tbe exhaust. I only have OBD-II scanning done. You can also check out The "active" Perrin CEL fix they have out. Sniffer test won't help there though. Catless uppipe should not effect sniffer test unless they check it when car is cold. Get yourself some 100 octane gas(sunoco) and begin trying cheapest ways to pass first. They can't do anything to you if your car fails a few times. I had a 72Nova years ago and I went through 12 times before I finally passed emissions.

edit-if all you have is a sniffer test, get a local ehaust place to fab up a quick cat to get you through.

Last edited by neverendingmods; 01-17-2004 at 02:15 PM.
neverendingmods is offline   Reply With Quote
Old 01-17-2004, 03:09 PM   #3
Scooby Newbie
Member#: 42511
Join Date: Aug 2003
Location: CA
2008 STi


get a perrin catted dp...they are $$ but by far the best ones on the market, they have a high flow cat and they guarantee no CEL...theyll also fit with any catback system for the wrx...so if u dont mind spending some extra money to get the best part out there, go for the perrin
typhoon116 is offline   Reply With Quote
Old 01-17-2004, 03:48 PM   #4
Member#: 37584
Join Date: May 2003
Location: Pismo Beach, CA
2002 WRX Sedan
Silver - STX #81 or #18


we just released the PDE downpipe with race cat but I don't know if it will pass your emissions test. It will pass the US Federal sniffer but CA sniffer is very close - sometimes passes, sometimes doesn't - just depends on the car and conditions. It definitely won't pass a visual inspection.

As I mentioned, I don't know what the emissions tests are like in Canada but thought this might be an option for you.

SpeedAbsolute is offline   Reply With Quote

Thread Tools
Display Modes

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
want to up grade stock clutch. how should i do it. sleepwalker_gsr Transmission (AT/MT) & Driveline 6 08-27-2008 05:43 PM
how should i do my interior carbonfiber/paint turbotomas Interior & Exterior Modification 3 11-04-2006 07:58 PM
How should I do it? spooledwrx Off-Topic 36 04-11-2005 10:22 PM
How should I do donuts in the snow with the STi? lupohki Newbies & FAQs 15 12-06-2003 10:51 AM
should i do this? booger Normally Aspirated with bolt-on Forced Induction Powertrain 4 12-21-2001 01:05 AM

All times are GMT -4. The time now is 02:13 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2019 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.