Go Back   LS1TECH > WELCOME TO LS1TECH > New LS1 Owners - Newbie Tech
Sign in using an external account
Register Forgot Password?
Search

New LS1 Owners - Newbie Tech
Basic Technical Questions & Advice
Sponsored by
Improved Racing

Cat code affect performance?

Reply
 
Thread Tools Search this Thread
Old 05-06-2008, 10:54 PM   #1
Teching In
2002 Pontiac Trans Am
 
mtinkle's Avatar
 
Trader Rating: 4
Join Date: Sep 2006
Location: Vandenberg AFB, CA
Posts: 48
Default Cat code affect performance?

Recently my passenger side cat took a dump and broke internally making a horrible sound. Took it to the local Pontiac dealership, fixed it at no cost (thank god) and informed me that my car's covered for 120,000 miles through GM. Anyways... i'd had a SES light for a long time and just figured it to be that O2 or the cat since that's what autozone's scan told me. But after the cat replacement the codes gone, problem solved.
So my real question is would that code have effected my performance that much? I guess with my cat broken the exhaust wouldn't flow very well through that side... but am i going to notice that much of a difference?
Thanks!
__________________
'02 Arctic White Trans Am - SLP Lid, Smooth Bellows, PnP TB, Magnaflow Catback, Pacesetter LT's, Pacesetter ORY, UMI STB, UMI SFC's, UMI Adjustable PHB, UMI LCA relocation brackets, UMI LCA's, Bilsteins, Eibach Pro Kit, Free Mods - - - Tuned by Jim of CalSpeed & Performance
mtinkle is offline   Reply With Quote
Old 05-07-2008, 05:52 AM   #2
TECH Fanatic
1999 Pontiac Trans Am
 
DVS99TRANS's Avatar
 
Trader Rating: 7
Join Date: Nov 2005
Location: E City,NC & Newark,DE
Posts: 1,172
Default

It would most likely effect the performance for that side of the motor the cat went bad on. I know if it was the pre-cat O2, I know it will pull timing, but not 100% sure if it will do it for a rear O2.
__________________
1999 BLACK TA M6-don't mind the lobe, its just down a cylinder
2001 RED WS6 M6 #6101 -309whp/320wtq SOLD
2008 Black Trailblazer SS-
DVS99TRANS is offline   Reply With Quote
Old 05-07-2008, 10:33 AM   #3
On The Tree
Garage is empty, add now
 
Trader Rating: 14
Join Date: Mar 2006
Location: Atlanta, Ga
Posts: 122
Default

Sometimes when the catalyst comes loose it can restrict the exhaust if it turns just right, but you normally don't have to wonder if something is wrong it runs like a dog when restricted.
rnl35thss is offline   Reply With Quote
Old 05-07-2008, 11:56 AM   #4
Teching In
2002 Pontiac Trans Am
 
mtinkle's Avatar
 
Trader Rating: 4
Join Date: Sep 2006
Location: Vandenberg AFB, CA
Posts: 48
Default

the before and after performance isn't night and day, of course in my head i think it's better, but mainly i was wondering if timing is involved any on the cat/rear o2 code?
__________________
'02 Arctic White Trans Am - SLP Lid, Smooth Bellows, PnP TB, Magnaflow Catback, Pacesetter LT's, Pacesetter ORY, UMI STB, UMI SFC's, UMI Adjustable PHB, UMI LCA relocation brackets, UMI LCA's, Bilsteins, Eibach Pro Kit, Free Mods - - - Tuned by Jim of CalSpeed & Performance
mtinkle is offline   Reply With Quote
Old 05-07-2008, 03:41 PM   #5
On The Tree
Garage is empty, add now
 
WS6addiction's Avatar
 
Trader Rating: 1
Join Date: Feb 2008
Location: Lincoln, Ne
Posts: 182
Default

The codes themselves (P0420/P0430) don't effect engine performance at all. It's just your cars way of saying "Hey, there's something wrong with my cat."
__________________
'01 WS6 M6 BLK JAAM/Bassani catted y/BMR sfcs, lcas, relos, adj. ta/Falken Azenis/!CAGS
WS6addiction is offline   Reply With Quote
Old 05-08-2008, 09:59 PM   #6
Registered User
Garage is empty, add now
 
Trader Rating: 0
Join Date: May 2008
Location: Sandston, VA
Posts: 47
Default

Quote:
Originally Posted by WS6addiction View Post
The codes themselves (P0420/P0430) don't effect engine performance at all. It's just your cars way of saying "Hey, there's something wrong with my cat."
He's right. The only problem you would have is possible exhaust restriction. All your rear o2's are there for is monitoring your cat efficiency.
__________________
01 WS6 MM6
My rear is louder than your rear
B-Unit01WS6 is offline   Reply With Quote
Old 05-08-2008, 09:59 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply


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 On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 01:57 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - JOBS
Emails & Contact Details