I have an 06 SS/SC and I've looked around on here and ppl say they're notorious for blowing/clogging the cats. From what I've read, most of the time this leads to overboosting. Are there any other symptoms, at WOT I boost a little above 12.5psi, and down low my exhaust is a little raspy and is getting worse. Does it sound like the cat is toast?

 

i have the same year and model car that you have, g85 package. you'll know when your cat is shot. it will sound completely horrible. like a swarm of bees are in your cat, only when under acceleration. when my stock cat went in my car you could only notice it when your under acceleration. when i was at idle or coasting(off the gas) the noise went away. it sounded pretty bad, i almost thought my supercharger was fucked, but i scratched that idea since i was still boostin 12.5psi. took it to the stealership, it was covered under the powertain warranty, ran better then when i orriginally bought it (used). sometimes if im flyin on the highways it seems i can pull an extra .5 - 1.5psi of boost.

 

Yea that sounds familiar.... under acceleration, now that I think about it, all through out the powerband, it sounds like straight rice......

If I buy a catted dp from like zzp or somewhere like that, it would fix it right? The only thing I'm afraid of is I don't want the car to be obnociously (sp) loud...its my dd so I want it to remain streetable but still be able to open up when I feel like it.

Advice?

 

i took mine to the dealership and they replaced it for free. ran them around 600-800. i forget. after labor n all. i spent absolutely nothing. now if i didnt have the choice to have it replaced for free i wouldve bought a ZZP DP with their magnaflow cats. i wouldnt worry too much about it bein loud. the cat back system will prolly go next dependin on your miles i guess. im at 51k. after they replaced my cat it sounded alot better and the rpms didnt drop as fast. my cat back stock system is about shot. its startin to pop and get some back fire when i run the rpms high n shift lol. sounds pretty cool but im startin to get some rattles. i plan on buying ZZP long tubes header/dp with a magnaflow cat, and matchin it up with a magnaflow catback. you cant beat the sound quality of magnaflow and its not too expensive. but if you decided to replace your downpipe/cat with a ZZP/magnaflow cat it will fix your problem and also make it sound alot better. get some hp out of it. and they arent priced too bad. definetly cheaper then the stock replacement downpipe. i think they go for around 180-200 from ZZP

 

you have any clue what the dB level is like? I don't mind it being a little louder if it sounds good, just not too loud ya know?

 

if you cat is getting clogged im postive the exhaust would get more quiet as the damage progress's. if its getting raspy or u hear like a tapping sound u might of cracked ur flex pipe... if this isnt it than bump for op

 

GM extended Cat coverage so odds are your's could be warrantied if it's on the way out .

Service Information
Document ID: 2382008
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#08020: Special Coverage Adjustment - Extended Catalytic Converter Warranty Coverage - (Jan 13, 2010)


Subject: 08020 - SPECIAL COVERAGE ADJUSTMENT - EXTENDED CATALYTIC CONVERTER WARRANTY COVERAGE


Models: 2004-2007 SATURN ION RED LINE

2005-2007 CHEVROLET COBALT SS

EQUIPPED WITH 2.0L 4-CYLINDER (RPO LSJ) ENGINE




--------------------------------------------------------------------------------
Condition
Some customers of 2004-07 model year Saturn ION Red Line; and 2005-07 model year Chevrolet Cobalt SS vehicles, equipped with 2.0L 4-cylinder (RPO LSJ) engine, may comment on illumination of the malfunction indicator lamp (MAL) and/or lack of engine power. This may be caused by failure of the catalytic converter.

Special Coverage Adjustment
This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.

Dealers/retailers are to replace the catalytic converter. The repairs will be made at no charge to the customer.

Customers should not be charged for performing a system check when it is determined that the catalytic converter is not the cause of the customer complaint. Labor code T5725 is provided to submit claims for such system checks. Any additional necessary diagnosis and repairs that are not related to the catalytic converter are NOT covered by this special coverage. The customer should be informed that any further service that is not covered by the new vehicle warranty will not be covered by this policy.

For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after January 14, 2010, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to January 14, 2010, must be submitted to the Service Contract provider.

Vehicles Involved
Involved are certain 2004-07 model year Saturn ION and 2005-07 model year Chevrolet Cobalt SS vehicles, equipped with 2.0L 4-cylinder (RPO LSJ) engine, and built within the following VIN breakpoints:

Year
Division
Model
From
Through

2005
Chevrolet
Cobalt SS
57500350
57673203

2006
Chevrolet
Cobalt SS
67600131
67887017

2007
Chevrolet
Cobalt SS
77100033
77398019

2004
Saturn
ION Red Line
4Z185538
4Z232057

2005
Saturn
ION Red Line
5Z100038
5Z181820

2006
Saturn
ION Red Line
6Z100021
6Z204142

2007
Saturn
ION Red Line
7Z100001
7Z140513


Important: Dealers/retailers using the Global Warranty Management (GWM) system are to confirm vehicle eligibility prior to beginning repairs by using the Investigate Vehicle History link on the Global Warranty Management application within GlobalConnect. Special Coverages are displayed in the Applicable Warranties section.

Parts Information
GM: Parts required to complete this special coverage are to be obtained from General Motors Service and Parts Operations (GMSPO).

Saturn US Only: Due to the limited number of affected vehicles, Saturn will not be doing a pre-shipment of parts. Retailers should order parts as needed from Saturn Service Parts Operations (SSPO).

Part Number
Description
Qty/ Vehicle

20889271
Asm, Catalytic Converter (2004 ION)
1

20889269
Asm, Catalytic Converter (2005-06 ION, Cobalt)
1

20889270
Asm, Catalytic Converter (2007 ION, Cobalt)
1

15231157
Gasket, Ctltc Conv
1

11514596
Nut, Ctltc Conv (2004 ION)
2

11517996
Nut, Ctltc Conv (2005-07 ION, Cobalt)
2

15235773
Gasket, Exhaust Manifold
1

11517996
Nut, Exhaust Manifold
3


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