Help factory catalytic con? Options

[bdog_v]

Well I am trying to install a new exhaust on my 94 celica Gt model and when I pulled the downpipe off the exhaust manifold I was surprised to see honey comb material in the exhaust manifold, like you would see in a catalytic converter????? Is the cat. located right next to the exhaust manifold on this car? If not what is this???? I don't have a cat anywhere else in my exhaust system.

-If this is the cat. I want it gone. Can you just punch out the honeycomb material and run it hollow or do you need to replace the cat. *if it is the cat.* with a straight pipe?????

-I don't have the heat shield off yet so I am not aware of how this is bolted together any ideas???? Thanks....

[Bigmeanbulldog55]

Hey, I did it. I took it off and punched it out. The car only has one cat btw. Some shops, and even the book will tell you otherwise, but I've been in there and I know. There is a resinater just infront of the back wheels. This can be mistaken for a cat. I took it off too. When I punched out my cat, it was very easy. That crap comes right out of there. I think I ended up with a leak after though. Make sure you can get the gaskets before you go at it. I didn't really notice much gains in mpg. I noticed a very little gain in high rpm. When you take it off and punch it out, you'll see how much it will screw with the path way of the air. I don't know if I would do this again. I've got a header setting in my trunk right now, and I made a flange yesturday, and I'm going to put it on and have full 2.25inch strate pipe made for it. Gutting the cat is a fun experiance, but I'm not sure it's really worth the time/effort/money for a performance mod. You're call though. If you just feel like doing something, go for it.

[Jaws4God]

Hey, I did it. I took it off and punched it out. The car only has one cat btw. Some shops, and even the book will tell you otherwise, but I've been in there and I know. There is a resinater just infront of the back wheels. This can be mistaken for a cat. I took it off too. When I punched out my cat, it was very easy. That crap comes right out of there. I think I ended up with a leak after though. Make sure you can get the gaskets before you go at it. I didn't really notice much gains in mpg. I noticed a very little gain in high rpm. When you take it off and punch it out, you'll see how much it will screw with the path way of the air. I don't know if I would do this again. I've got a header setting in my trunk right now, and I made a flange yesturday, and I'm going to put it on and have full 2.25inch strate pipe made for it. Gutting the cat is a fun experiance, but I'm not sure it's really worth the time/effort/money for a performance mod. You're call though. If you just feel like doing something, go for it.

did you have it inspected afterwards? i'm just hoping mine will still pass with that one punched out...