[talentjeep]

So I searched "catalytic removal" and found a few posts. But nothing definitive. One of them has a post from a moderator saying that "ANY POSTS ABOUT CAT REMOVAL WILL BE DELETED."

This is not about removing my cat as much as it's about finding the right cat for my Jeep and talking about exhaust configuration.

So I'm assuming that taking off your cat is some sort of horrible awful thing that poisons everything around you. I've read a few facts but I haven't seen any clear numbers/facts on how bad it is for the environment.

1) My Jeep has no emissions requirements where I live because of it's age. Does Federal law still apply?

2) What horrible compounds will I release into the air if I remove my catalytic converter? I live in a valley that traps a lot of bad air so it matters to me.

3) I had thought about removing the cat to shorten the exhaust pipe and have it go out the side of the jeep before the trans cross member on the passenger side. Is there a configuration _with_ a catalytic converter that would let me do this?

Thanks.

[Comanche_]

Without a cat you will have all the unburned fuel comeing out and into your air you breath. So your jeep will smell like gas when it's running.
and fuel injected computer controlled vehicles dont run rite when you remove them. The oxygen sensor freaks out.

[Unlimited04]

Originally Posted by talentjeep

1) My Jeep has no emissions requirements where I live because of it's age. Does Federal law still apply?

2) What horrible compounds will I release into the air if I remove my catalytic converter? I live in a valley that traps a lot of bad air so it matters to me.

3) I had thought about removing the cat to shorten the exhaust pipe and have it go out the side of the jeep before the trans cross member on the passenger side. Is there a configuration _with_ a catalytic converter that would let me do this?

Thanks.

1- yes federal laws still apply. if your vehicle came from the factory with a cat - labeled "Catalyst" on the sticker under the hood - then you are required to have a cat converter installed.
2- read here: http://www.jeepforum.com/forum/f19/f...r-work-630466/
3- why do you want to exit the exhaust on the passenger side? this eliminates the air pressure effect of going over the axle that helps with water fording, among other minor issues.

Magnaflow makes nice, compact, high-flow cats that you can weld in place, combine it with a small Flowmaster or Magnaflow muffler, and i'm sure you could have a side exit.

[talentjeep]

Originally Posted by Unlimited04

why do you want to exit the exhaust on the passenger side? this eliminates the air pressure effect of going over the axle that helps with water fording, among other minor issues.

It's just one less thing to get in the way and doing away with the flange that mounts on the trans cross member would be handy. I think it would look interesting as well.

As far as fording is considered are you saying that the increased length of the exhaust builds pressure to keep water out? I would have thought the pressure would be similar but if it increases airflow I suppose it would decrease the pressure. Or is it the configuration of the cat back that helps keep water from entering?