I had a little fun today.

The cutlery:



The victim:




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Hehe. Ok.. THIS cat you goofs :

The tools:



JDM ITR cat:

Before:



After:











Some remnants:




Tech info :

Take off your cat and jam a screwdriver into the hole and hit it with a hammer. It's pretty hard at first but once it starts breaking, it's easy. After that, wash out the cat with watter and you can paint it if you want. Then reinstall it with a new gasket and some hondabond or whatever..


My 2 cents about this:

First of all I did this because I was bored, and I wanted to inspect my cat and make sure it wasn't clogged. Well it looked pretty damn dirty in there so I gutted it.

So what do I think? If you are OBD1 and you don't want to waste your money on a tespipe, DO IT. But do NOT do it if you live in a very emissions regulated state. I can get away with this in Washington.

Anyways, I didn't notice much, only top end, but it's better than before, I'd guestimate 3 hp. My Tanabe RM didn't get noticeably louder, thank god. I'm usually against this type of modification.. but I think it worked out well in my case.

BTW, I have a JDM ITR engine and I'm running a kenji p28.

 

sweet looks like imma give it a try

 

I tried to do that **** with a hammer and a screw driver, that **** won't budge.
so i went to home depot and got me a big **** drill, and i drilled though the dam thing. job well done.

 

nice, i just did the same thing on sat, not by choice though, the damn ceramic stuff inside decided to break loose and start to rattle, i couldnt take it.

i used a big a$$ crow bar and just pounded away at it, cant say i really notice a difference power wise though, it is a little louder, and i can hear the air "wooshing" out of the pipe now

 

My roommate did his cat on Sunday.......then went for a test drive, went back to the garage, and had a rod knock Oh well, his motor was tired, time for a rebuild.

 

My car looks just like your except black. I love my 98 LS mesh rims

 

sweet. when i get some time thats my next project.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bikeboy80 &raquo;</TD></TR><TR><TD CLASS="quote">nice, i just did the same thing on sat, not by choice though, the damn ceramic stuff inside decided to break loose and start to rattle, i couldnt take it.
</TD></TR></TABLE>

Is it a carsound?

 

i did that with my cat and now my cel is on cuz of secondary o2 sensor

 

So by doing this mod you aren't cleaning out carbon deposits and stuff but rather basing out the catalyzing stuff making it a straight pipe? I'm kinda confused.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chiller514 &raquo;</TD></TR><TR><TD CLASS="quote">So by doing this mod you aren't cleaning out carbon deposits and stuff but rather basing out the catalyzing stuff making it a straight pipe? I'm kinda confused.</TD></TR></TABLE>

This mod just allows more air to exit out of the exhaust. I think this is more of a straight pipe setup.

 

i can see why you would do this if you had an extra cat or somthing... but y dont you just buy some pipe and make your own? .. that is if you know how to weld

 

I gutted my neighbor's cat for him. Damn thing wouldn't shut up. Meowing 24-7. 30 days in the clink and a $500 fine. It was so worth it.

 

So is this just a way to keep from having to buy a highflow cat? And why just OBD1? Sorry for the questions still learnin

 

Because OBD2 cars have an O2 sensor on the cat that will make your engine throw a code if the cat is tampered with. Rick

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nameless EJ6 &raquo;</TD></TR><TR><TD CLASS="quote">
So what do I think? If you are OBD1 and you don't want to waste your money on a tespipe, DO IT. But do NOT do it if you live in a very emissions regulated state. I can get away with this in Washington.
</TD></TR></TABLE>

good job.. in another 10 yrs washington won't have trees
are the gains worth the smell?

 

IF u inhaled the CAT fumes... its very bad for you...

 

that cat is JDM fast food

 

DO NOT hollow out the stock cat. For one, it only causes about 1-2lbs of extra backpressure which isnt bad. secondly, a hollowed stock cat will actually hurt performance. The empty cat will have flow stagnation with gasses just sitting around and it will kill your fow velocity resulting in a loss throughout the powerband.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sleeprhatch &raquo;</TD></TR><TR><TD CLASS="quote">that cat is JDM fast food </TD></TR></TABLE>

hahaha
thats scary . cause i live in the bx and there are alot of myths out here about that

 

lol, good post, but i wouldnt recommend doing this either, I dont think it will help your performance but rather hurt it.

 

I put my cat up against my patio, put a long piece of metal bar inside, stood over the cat and swung a little sledge hammer hitting the bar. It took awhile but it did the job. And for the people telling you not to do it, well what would you rather have, a clogged cat or a gutted cat. I did not feel like spending my money on a test pipe.

 

i did that, and before the turbo toned everything down it was soooooo loud.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Primax &raquo;</TD></TR><TR><TD CLASS="quote">DO NOT hollow out the stock cat. For one, it only causes about 1-2lbs of extra backpressure which isnt bad. secondly, a hollowed stock cat will actually hurt performance. The empty cat will have flow stagnation with gasses just sitting around and it will kill your fow velocity resulting in a loss throughout the powerband.

</TD></TR></TABLE>

Exactly...

Loss of exhaust gas velocity=Loss of power

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackANESE &raquo;</TD></TR><TR><TD CLASS="quote">

Is it a carsound?</TD></TR></TABLE>

yup, only about 6 months old

i dont know what to try next, i've tried both carsound and randomtech now, and dont really like either one

mine doesnt smell any different then when the cat was in, no rotten eggs here

i'll leave mine like this untill i can afford to do something, either straight pipe or another cat, but which one? anyone have any suggestions?