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Gutting cats.

4K views 50 replies 15 participants last post by  Jtrejo_03 
#1 ·
I was thinking about gutting the cats on my 2005. I have borla atak axle backs. Just wondering what you guys think.
 
#9 ·
Exactly what I have. I went to get inspected and when they did the emission testing part I passed and then they looked said I didn't have cats and failed me. Bought some cats off of AM had a guy gut them and put them in and sounds no different

---------- Post added at 08:28 AM ---------- Previous post was at 08:27 AM ----------

Exactly what I have. I went to get inspected and when they did the emission testing part I passed and then they looked said I didn't have cats and failed me. Bought some cats off of AM had a guy gut them and put them in and sounds no different
Well since you haven't heard your car catless it will sound different. It will be louder and meaner like having an O/R mid pipe.
 
#18 ·
Exactly what I have. I went to get inspected and when they did the emission testing part I passed and then they looked said I didn't have cats and failed me. Bought some cats off of AM had a guy gut them and put them in and sounds no different

---------- Post added at 08:28 AM ---------- Previous post was at 08:27 AM ----------


Well since you haven't heard your car catless it will sound different. It will be louder and meaner like having an O/R mid pipe.
You have any problems with a "check engine" light? I also wonder about a significant drop in mileage. The reason I ask is... I gutted a truck cat once because the honeycomb guts had crumbled and it sounded like gravel churning. I soon noticed a check engine light when pulling off a highway to stop. The cat cooled quicker than normal, and the light came on. I also noticed higher fuel consumption. I assume the gutted cat wouldn't stay hot, so the computer dumped in more fuel to try heating it up. The tailpipe stayed black and fuel smoke was visible until I replaced the cat. After that, everything was normal again.
 
#15 ·
No. If you have mufflers on it you wont ever get stopped. If you run no cats no mufflers there is a chance but thats how my old car was and I never got stopped.
 
#23 ·
It will sound like garbage to me personally... its too loud for a daily driver.. I had it on my 2v and loved it but the tone was terrible...

---------- Post added at 07:46 PM ---------- Previous post was at 07:46 PM ----------

You will definitely be noticed by everyone including cops lol
 
#32 ·
You take them off, once they off you can cut them in half and get all the mesh type metals out. After that you weld them together and put them back. Orrrrr you can just put a pipe there and sell your cats to a scrap yard for 100 bucks or so. Then you will have a free offroad mid pipe
 
#34 ·
I did it before were I just took them off and beat the living daylights out of the inside and it didnt get all the metal so that way doesnt work too well. But all you gotta do is go to a scrap yard
 
#36 ·
Yeah I have done the same and then one of the guys told me that In my area that they were starting to do emissions checks and the fine would be $10,000.

---------- Post added at 12:04 PM ---------- Previous post was at 12:03 PM ----------

And the $10,000 dollar fine would be for the person running it and the mechanic who did it.
 
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