Welcome to the North American Subaru Impreza Owners Club Monday September 1, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Archives > NASIOC Archives > STi Forum Archive

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.
* Registered users of the site do not see these ads.
 
 
Thread Tools Display Modes
Old 08-13-2003, 04:09 PM   #1
MontrealSTi
Scooby Newbie
 
Member#: 38045
Join Date: Jun 2003
Default Racepipe or Catpipe on exhaust?

What do you suggest? Has anyone tried either? Any results? If I do racepipe, is there a chance that I am damaging the car?

Any advice appreciated!

Thanks
* Registered users of the site do not see these ads.
MontrealSTi is offline  
Old 08-13-2003, 06:41 PM   #2
wgknestrick
Scooby Specialist
 
Member#: 32576
Join Date: Feb 2003
Location: Allentown, PA
Vehicle:
04 STI
Roller Barrel ITBS

Default

With a racepipe, you can:

run leaded gasoline with very high octane (more HP)
Get about 5HP more (this scales with power levels though)
smell your catless, polluting ass in the vehicle behind you
risk "staining" your clearcoat on the rear bumper
barely hear yourself in the car
never, ever legitamatley pass inspection
lose 5lbs from exhaust weight
pay about $100-$50 less for the exhaust


I think I have covered everything here and it is up to you to decide. A catted system has all of the same points, but reversed.
Neither will damage your car right away, but the exhaust could (prob not) shorten the life of some components due to the engine making more (10%) power. You prob won't still own the car at this point though (read 90K miles).

I have had both on my old WRX. I started out catless then went to catted. The positives of catted greatly outweigh the positves of catless for what I was doing with the car. Sounds simple, but the "race pipe" is actually intended for "racing" only. So if you don't have (or don't plan on having) a 5 point harness in your car with a 1 piece bucket seat, go catted. If you plan on dragracing or autocrossing frequently, go for it.
wgknestrick is offline  
Old 08-13-2003, 06:48 PM   #3
MontrealSTi
Scooby Newbie
 
Member#: 38045
Join Date: Jun 2003
Default

Thanks for the response, I ended up choosing cat. The car is still a daily driver.

Thanks again,

Rob
MontrealSTi is offline  
Old 08-13-2003, 07:19 PM   #4
Davenow
Scooby Guru
 
Member#: 23676
Join Date: Aug 2002
Chapter/Region: NESIC
Location: de_dust and Orgrimar
Vehicle:
.

Default

You forgot to tell him the other joy of running leaded gas

Replacing your 02 sensor every 100 gallons or so.
That'll cost ya a few hundred right there.


Yes run a race pipe, yes run leaded, just run it only when you need to.
Run unleaded for daily driving.
Davenow is offline  
Old 08-13-2003, 07:48 PM   #5
lstepnio
Scooby Specialist
 
Member#: 10972
Join Date: Oct 2001
Chapter/Region: South East
Location: Tampabay, Florida
Vehicle:
2004 STi (fuxor3d!!)
2004 Forester X

Default

As already pointed out one really can't run leaded gasoline as it will destroy your O2 very quickly. The catless pipe won't make the car that much louder at all(from experience). You also most likey won't pass inspection in most states with a high flow cat either soley based on a visual inspection. Once you get a proper tune odors shouldn't be more of a problem than with most normal slightly older cars on the road. In my experience the high flow cats don't do a very good of scrubbing the exhaust either.
lstepnio is offline  
Old 08-13-2003, 09:45 PM   #6
Alleggerita
Scooby Newbie
 
Member#: 8281
Join Date: Jul 2001
Location: BC
Vehicle:
1967 Alfa Romeo GTA

Default

Quote:
Originally posted by lstepnio
You also most likey won't pass inspection in most states with a high flow cat either soley based on a visual inspection.
If you put a resonator where the cat is supposed to be, most places will think it's a cat. And modern cars when properly tuned an not too modified will often pass without a cat. I am talking from experience. At the same time I would discourage anybody from running a daily driver without cat.
Alleggerita is offline  
 

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
uel header, walker 2.5rs catpipe, WRX exhaust. anything else? God Normally Aspirated Powertrain 14 08-15-2008 08:05 PM
Turboxs racepipe OR catpipe. 2002-2006+ miraclemonkeywrx Engine/Power/Exhaust 13 09-27-2007 02:44 PM
FS-WA: TXS racepipe,midpipe,catpipe, downpipe, adapter pipe. miraclemonkeywrx Engine/Power/Exhaust 52 09-08-2007 02:35 AM
FS or TRADE: TXS racepipe,midpipe,catpipe, stock 05sti muffler. miraclemonkeywrx NWIC Private Classifieds 11 01-05-2007 01:49 AM
Sealant on exhaust gaskets? Yay or nay? NicGordon Service & Maintenance 7 03-10-2004 01:02 PM


All times are GMT -4. The time now is 06:47 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.