Is taking your CAT converter off good or bad for performance, should i just keep it on or take it off, would it matter, and if its bad for your car, how bad is it to be off the car, i heard it waz kinda bad but i never been told the details of it. J/w.

 

Well if u havent done anything to your car all taking the cat off will do is make it sound like a over grown lawnmower and as far as power gains minimal MAYBE like .5hp at the wheel and plus its ILLEGAL to run catless i dont want u to think this is a flame or anything basically its not worth the trouble save ur money and get a good cat back system and a high flow cat so u can stay legal peace

 

Is the only forum you are with, look at this that site is way better than this one. and then gander at this thread on Hondaswap THIS , it's a very heated arguement over on hs. my two cents, and you dont actually gain anything from removing the cat.

 

Screw the car. It's totally messed up to remove the cat because of the emissions. Everyone would have to breathe the air you pollute, and that isn't fair.

If you want more performance, get a high-flow cat. A good high-flow cat will flow better than your MUFFLER. If you don't have the money for a high-flow cat (Like $100+labor for a custom one and $200 for a bolt-on), then don't mess with it.

Anyways, you'll only notice something swapping ths part out if your cat's getting clogged. Otherwise, the simple advice is DON'T REMOVE YOUR CAT.

Again, It's really bad for the environment.

 

well if you car is a 98 then you will throw a code and your engine will run is the safe mode or what ever it is called i believe and you will lose that hp you were lookin for

 

Removing the cat is illegal. Get a hi-flo cat and you should be fine. The stock cat is a major bottleneck, and is the #1 most overlooked performance upgrade for folks who do bolt-ons.

As I stated before, a fellow Integra owner (95') dynoed his stock GSR and got a whopping 95 whp. Problem? A clogged cat.

This does not mean you should hollow out your stock cat, nor does it mean you should run a test pipe.

Shingo

 

Removing the cat or destroying it by hollowing it out are not very prudent routes to take, but getting a hi-flo unit does help tremendously. Again, the stock cat becomes a larger and larger bottleneck as you increase your breathing capabilities (eg. lumpy cams). There is a reason why dedicated ITA/ECHC cars run test pipes.

Shingo

 

forgive my ignorance but what is a test pipe ?

 

"test pipe" is just a tube with a hole for your O2 sensor, and flanges to connect your header to the rest of your exhaust. Simple, yet horrible for the air you breathe