Cats question
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 1,190
Likes: 56
From: Milan Indiana
Cats question
Have modded 04 with long tube headers and Billy Boat Bullits. The Cats were removed in this process by prior owner and the check engine light was deleted. My question is- how expensive and difficult is it to put Cats back on(dont have them) and reset the check engine light. Certain states require inspections( Pa) and may need to do this soon Thanks for any help. looking for ballpark cost and answer to computer reset
Last edited by pnewt; Dec 26, 2012 at 05:28 PM. Reason: spelling
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
Have modded 04 with long tube headers and Billy Boat Bullits. The Cats were removed in this process by prior owner and the check engine light was deleted. My question is- how expensive and difficult is it to put Cats back on(dont have them) and reset the check engine light. Certain states require inspections( Pa) and may need to do this soon Thanks for any help. looking for ballpark cost and answer to computer reset
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Your in luck.. NUMEROUS people here have the entire mid pipe section (with CATS ) sitting idle in their shed. Recommend that you post a WANTED post in the C5 Parts FOR SALE/WANTED.
You will get LOTs of replies. Make SURE that you find one that will fit your exhaust manifolds. There are several different styles. Early Mid and Late model C5 and ZO6.. You can HACK the CATS off any of them and weld them in your system. Heres what your looking for:
If you will NOTE,,, this unit has PRE PUP CATS. The early C5s didnt have them.
You will get LOTs of replies. Make SURE that you find one that will fit your exhaust manifolds. There are several different styles. Early Mid and Late model C5 and ZO6.. You can HACK the CATS off any of them and weld them in your system. Heres what your looking for:
If you will NOTE,,, this unit has PRE PUP CATS. The early C5s didnt have them.
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
Your in luck.. NUMEROUS people here have the entire mid pipe section (with CATS ) sitting idle in their shed. Recommend that you post a WANTED post in the C5 Parts FOR SALE/WANTED.
You will get LOTs of replies. Make SURE that you find one that will fit your exhaust manifolds. There are several different styles. Early Mid and Late model C5 and ZO6.. You can HACK the CATS off any of them and weld them in your system. Heres what your looking for:
If you will NOTE,,, this unit has PRE PUP CATS. The early C5s didnt have them.
You will get LOTs of replies. Make SURE that you find one that will fit your exhaust manifolds. There are several different styles. Early Mid and Late model C5 and ZO6.. You can HACK the CATS off any of them and weld them in your system. Heres what your looking for:
If you will NOTE,,, this unit has PRE PUP CATS. The early C5s didnt have them.
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 1,190
Likes: 56
From: Milan Indiana
cats
Thanks for reply. There are LG Pro long tube headers on the car I'm only interested in making it legal to register in state like Pa where inspection and emissions are required
Team Owner
Joined: Dec 2010
Posts: 22,707
Likes: 798
From: Hillsborough NC
NC Events Coordinator
I have catless AR headers and X-pipe combo the previous owner had installed. In his city he had a nod-nod, wink-wink inspector who let him go every year, but I don't. I'm also getting tired of the smell. I was quoted $500-600 over the phone by a respected local exhaust specialist to install high-flow cats.
That seemed a little strong to me. I'll be looking for some more estimates this week. Anyone have an idea what would be reasonable?
That seemed a little strong to me. I'll be looking for some more estimates this week. Anyone have an idea what would be reasonable?
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
If you are going to re-install your cats and re-enable the DTC functions you will need to also re install the " Rear" 02 sensors----
The rear 02's are what report to the ECM the condition and operation of your cats
Called the "COT" or cat overtemp system"--Not only do you re-enable all the DTC's most likely the COT system has been turned OFF as it is tunable--have your tuner turn it back on-----
PS: If you want you can install the cats but leave all the DTC reporting and CO system turned OFF . The catylitic system will still work but just won't work 100% and the overtemp system won't work but that's really not a big deal---best of all no codes !! and the easiest fix--no need to go to the tuner !
The rear 02's are what report to the ECM the condition and operation of your cats
Called the "COT" or cat overtemp system"--Not only do you re-enable all the DTC's most likely the COT system has been turned OFF as it is tunable--have your tuner turn it back on-----
PS: If you want you can install the cats but leave all the DTC reporting and CO system turned OFF . The catylitic system will still work but just won't work 100% and the overtemp system won't work but that's really not a big deal---best of all no codes !! and the easiest fix--no need to go to the tuner !
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Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
I have catless AR headers and X-pipe combo the previous owner had installed. In his city he had a nod-nod, wink-wink inspector who let him go every year, but I don't. I'm also getting tired of the smell. I was quoted $500-600 over the phone by a respected local exhaust specialist to install high-flow cats.
That seemed a little strong to me. I'll be looking for some more estimates this week. Anyone have an idea what would be reasonable?
That seemed a little strong to me. I'll be looking for some more estimates this week. Anyone have an idea what would be reasonable?