clac225

I am worried if I gut out the cat that I will throw a code, I know someone has done this on the forum, can you tell if it does?

and if I throw a code, will if fuck up my fuel and vtec, or will it just be a eye sore on my dash

appreciate it

VXCL

the only way you'll have a problem is if you mess the o2 sensor up. the dealer told me they are just there to moniter how well the cat is working. so both the o2 before and in the cat will be getting the same readings. this would mean your cat is failed, but i dont think it will throw a code.

okbye2

Dont gut it out. Recently i purcheased a straight pipe on ebay for $65with the o2 sensor thread. Its a perfect fit. They have more for sale. But then again it depends on where you live if they check fo cats or not.

haiduc

even if you gut it.. you still have a cat housing.. it's just empty.

CybrStudd

okbye2:

When you put in that straight pipe, did your check engine light come on at all, and could you tell a difference in performance? I was going to make my own pipe, but wasn't sure if it would throw a code or not. I've also heard that if you just hang the O2 sensor outside of the exhaust, it will be ok, because it's reading clean air there, so it will think the cat is working.

okbye2

No code yet but then again its only been in for a couple of days. I did notice some difference, better responce, little more hp. Definately worth it!

q2slinger

It will definitly throw a code if you gut the cat.

67 - Catalyst System Efficiency System below threshold, defective catalytic converter

Trust me, been there done that.

Just buy a high flow cat. Just as good as a straight pipe.

aGUYfromHARLEM

i just got done gutting my cat last period (im in high school) how long untill it will throw a code, i sure hope it wont

ge1stn

i gutted mine it took a day to throw the code

ge1stn

but i disconnected the battery and it turned the check engine light off

aGUYfromHARLEM

so when u unhooked the cable, it went off for good?

ilike2cheez

iTrader: (2)

took me 2 months to throw codes...now it stays on for a week....then goes off....then comes on again...its is now off..
I have a random technology high flow cat.

clac225

cat has been gutted for two days.................no code, and I get that nice exaust smell when I am at a stop light.

btw, I think I lost the little bit of torque I had

aGUYfromHARLEM

yep the engine light is on, but i want to take off that dang resignator off too, all that does it slow down the air flow and baffle the sound to make it quiter...

jermz123

yeah i took my resonator off wen i got the car

aGUYfromHARLEM

jermz123: what did the car sound like when u took it off? do u have a stock or aftermarket muffler, thanks

okbye2

Whats the status on those codes? any yet?

CybrStudd

I see on Magnaflow's site that they have ODB-II compliant high flow cat converters. I wonder if these would work with our cars and not throw a code. You can get them with the O2 sensor boss built in.

Magnaflow ODB-II Compliant Cats