I was wondering will this cat throw a code since its bigger than the stock one. Cause I plan on still using the co2 sensor. So if I hook the co2 sensor back up will it throw any type of code?

 

It will most likey throw a code after a while, although no code will be "thrown" if you ustilize a mechanical o2 fix

 

Many cats that flow higher than stock throw the 0420 code.

 

I have the Perrin HFC and I did get several check engine light. I added the O2 'mechanical fix' and it no longer throws the code.

 

just take out the sensor and have the cel flashed out

 

Its a Oxygen sensor. Not a CO sensor.

Not trying to be an ***.

 

A CReader is more expensive, but will also work.

 

I used the "o2sensor simulator" and havnt had any problems. I think the website is o2simulator.com its an easy install and it takes care of any future code problems. Cheap too!

 

i am currently using that cat in combo with an HKS Carbon Ti catback and invidia 3" downpipe.

it will occasionally throw the 420 code, and i am not sure why.

i will go months without seeing it, then once in a while, seemingly out of nowhere it will throw it, and if i reset it, or just drive around for a while it goes away.

my only guess is that weather has something to do with it. it seems more prone to happen when it is really hot ouside, like 90+, or when it is really cold outside, like 25 or below. but like i said, only occasionally.

generally it is good about it though, and i passed inspection at the dealer with it, so it's a good choice for a high flow.

 

My bad on mixing those two up. It was late at night and had a long *** night. So should I just get flashed out, or get the o2 mechanical fix thing?

 

I have the Perrin HFC and Downpipe. It didn't throw a cel until recently. I did the mechanical fix which is very easy to do and its been fine ever since.

 

Where can I purchase or get one of those mechanical fixes?

 

just get 2 spark plug anti foulers, drill one out with a 1/2 inch drill bit. screw the drilled out one onto your o2 sensor, screw the other one on top of that and then screw the whole thing into your exhaust. (exhale) I forget the thread size though, for the anti foulers.

 

about to do an obd2 license test. hi flow cat and mechanical fix, we will see.

 

I've had the Perrin 3" HFC with all the mods in my sig for about 4K miles and have not had 1 CEL.I do have the O2 CEL fix and the car runs perfectly.You will be fine.