Pro's and Con's of Gutting my CAT
#1
Pro's and Con's of Gutting my CAT
I've been feeling like my cat has been going out for awhile, I bought a catback and checked as much of the cat as i could while I was down there. There were pieces of my cat falling out everywhere, I decided to have my friend Rev it real good without anything attached to the cat, and honeycomb chunks blew out everywhere, I drove it real hard without any exhaust on for a couple of miles to see if I could get anymore out. I just passed my emissions, so I am good for two years.
What are the pro's and con's of just poking everything out of my cat? How much louder will it be (compared to driving with just the cat and nothing catback?)
Thanks
What are the pro's and con's of just poking everything out of my cat? How much louder will it be (compared to driving with just the cat and nothing catback?)
Thanks
#2
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Cons:
- Unable to pass a sniffer emissions test, if you have that
- Will need a reflash tool to block emissions CELs to pass OBD2 emissions
- Increased exhaust fume smell that usually bothers your significant other
- Rear O2 will fail faster
- If your cat is good, gutting it is destroying an expensive piece of working hardware
Pros:
- A bit more power
- It can no longer clog up and then damage your engine
- If your cat is already dead, it's a free mod
Pro or Con, depending on your personal preference:
- Changes sound tone and volume
- Unable to pass a sniffer emissions test, if you have that
- Will need a reflash tool to block emissions CELs to pass OBD2 emissions
- Increased exhaust fume smell that usually bothers your significant other
- Rear O2 will fail faster
- If your cat is good, gutting it is destroying an expensive piece of working hardware
Pros:
- A bit more power
- It can no longer clog up and then damage your engine
- If your cat is already dead, it's a free mod
Pro or Con, depending on your personal preference:
- Changes sound tone and volume
#3
You gonna eat that?
iTrader: (1)
Be sure your pipe & muffler don't have any chunks in them either.
If you bang on the muffler and hear pieces rattling in it you should take it off and try to shake it out.
That can restrict your exhaust also.
*edit* I see now you drove it without your catback, be sure there is nothing left in the cat before installing your new exhaust.
If you bang on the muffler and hear pieces rattling in it you should take it off and try to shake it out.
That can restrict your exhaust also.
*edit* I see now you drove it without your catback, be sure there is nothing left in the cat before installing your new exhaust.
Last edited by BigCajun; 12-31-2014 at 10:59 AM.
#4
Thanks for the replies, great list so far.
It's probably safe to say my cat isn't in the best shape though if huge chunks of honeycomb are flying out right?
I can already smell unburnt fuel smell when I roll the windows down and am driving, probably the cat? Or maybe fuel pump/lines not sure.
It's probably safe to say my cat isn't in the best shape though if huge chunks of honeycomb are flying out right?
I can already smell unburnt fuel smell when I roll the windows down and am driving, probably the cat? Or maybe fuel pump/lines not sure.
Last edited by Daboy150; 12-31-2014 at 11:29 AM.
#5
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