Decisions .... Decisions
Thread Starter
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
Decisions .... Decisions
I'm finally putting headers on my car, I ordered FLP's thru Thunder Racing and when I got them I had planned on installing the cats but now that I've opened the box and saw there are off road pipes to replace the cats and I get to choose whether I want to put the cats on or not.
I've heard that people who have left the cats off have a stronger exhaust odor, is this true? what about sound level, is it louder?
I would really appreciate any help you can give me with making this decision, but then again I guess I can always experiment and if I don't like the off road pipes I can always take them off and put the cats on. :cheers:
I've heard that people who have left the cats off have a stronger exhaust odor, is this true? what about sound level, is it louder?
I would really appreciate any help you can give me with making this decision, but then again I guess I can always experiment and if I don't like the off road pipes I can always take them off and put the cats on. :cheers:
Burning Brakes
Joined: Feb 1999
Posts: 1,165
Likes: 1
From: San Jose CA
Re: Decisions .... Decisions (runamuk)
Use your cats :yesnod:
If you want to use the off road cat replacement pipes, you also need 2 O2-sensor emulators or the PCM will set the check engine light.
:cheers:
If you want to use the off road cat replacement pipes, you also need 2 O2-sensor emulators or the PCM will set the check engine light.
:cheers:
Team Owner
Joined: Feb 2003
Posts: 37,329
Likes: 12
From: Plano Texas
CI 6-7-8-9 Veteran
CI-VI Car Show Winner
St. Jude Donor '07-'08-'09-'10-'11-'12-'13
Re: Decisions .... Decisions (runamuk)
IMO, do not use the CATS (assumes that your located in an area where inspection is OBD II, and minimal visual inspection is done at that inspection).
W/O CAT's, the sound via the Corsa Indy's is loud, but bearable.
The ol wives tale about 'smell' is just that. If you park in a garage, there will be a SLIGHT gas smell for a minimal length of time after parking.
:cheers:
W/O CAT's, the sound via the Corsa Indy's is loud, but bearable.
The ol wives tale about 'smell' is just that. If you park in a garage, there will be a SLIGHT gas smell for a minimal length of time after parking.
:cheers:
Racer
Joined: Jul 2001
Posts: 386
Likes: 0
From: Round Rock, Texas, USA
Re: Decisions .... Decisions (runamuk)
I am in the same position. I am finishing up my install of new heads, cam, and headers. There is minimal visual inspection where I am, so I am thinking of ditching them. Although, I do already have some QTP cutouts. Unfortunately, they installed them after the cats. If I keep the cats, I will move the cutouts in front of them if possible. I don't know if that would require O2 sims or not, but that is no big deal. I had B&B PRT's and a 106 lsa cam that idled pretty rich. My wife thought the fumes were pretty bad, but it didn't really bother me that much.
