catalytic converter

[lillemon]

i was thanking about hollowing out my catalytic converter. would i see any great gain in h/p and how bad would it affect how loud it is

[lillemon]

y is everyone just reading someone comment

[Stillrunning]

No comment.

[youngflashycamr]

^^lmao!!! i dun think ur gonna se a great raise in hp...1-3 sometin like dat

[eurohazard]

Originally Posted by lillemon

y is everyone just reading someone comment

Here's a comment (you won't like it):

You might add a few hp, but you will likely lose low end torque. And that means it will actually accelerate slower from a stop. It will be louder, for no reason, and it might resonate annoyingly.

Now the really bad part: If you get caught you will be fined.......Anywhere from $1,000 to $20,000. It depends on where you live.

Sure the odds of getting caught seem low, but don't risk it. Now your IP address can be traced back to you asking this question. Never underestimate the power of Big Brother.

[Mike Gerber]

You will see very little gain in horsepower. The catalytic converters on today's cars are much less restrictive than those that first were put on cars in the 1970's. Doing this however, would greatly increase your emissions and if you have any emissions testing in your area, your car will not pass.

Mike

[youngflashycamr]

^ co sign...and if u have a OBD2, u'll trigger the check engine light cuz the downstream O2 sensor aint pickin up what it should

[marc780]

I'll add my two cents, i acutally did this once on my truck because it wasnt running right. And somebody convinced me it might be the cat converter that was plugged up. So i knocked the guts out, put it back on, and drove it like that for a while. a little bit more horsepower and freer revving but no huge gain and like the others were saying, probably not worth it. I bought a universal cat and just bolted that on at smog time, and just left it on and tossed the hollowed out one. Swapping it back and forth at smog check time or something, naw - too much work for me.

I dont know the smog laws in your state, but Here in Kalifornia they have begun using trailers at on ramps that measure your tailpipe emissions as you are waiting to get on the freeway! No fooling! They move the trailers around and if they detect bad emissions you get notified by mail by the state, and you can be sure its not a Hallmark greeting card either.
So i just leave the cat on as per the factory installation.

[Qslim]

Originally Posted by eurohazard

Here's a comment (you won't like it):

Sure the odds of getting caught seem low, but don't risk it. Now your IP address can be traced back to you asking this question. Never underestimate the power of Big Brother.

Are you for real? What, you think Chris Hanson is working with the FBI to catch people who try to circumnavigate the CARB restrictions? You sir, are paranoid.

[daveart]

if you like a engine light on then go for it.

[rholzboog]

Originally Posted by marc780

I'll add my two cents, i acutally did this once on my truck because it wasnt running right. And somebody convinced me it might be the cat converter that was plugged up. So i knocked the guts out, put it back on, and drove it like that for a while. a little bit more horsepower and freer revving but no huge gain and like the others were saying, probably not worth it. I bought a universal cat and just bolted that on at smog time, and just left it on and tossed the hollowed out one. Swapping it back and forth at smog check time or something, naw - too much work for me.

I dont know the smog laws in your state, but Here in Kalifornia they have begun using trailers at on ramps that measure your tailpipe emissions as you are waiting to get on the freeway! No fooling! They move the trailers around and if they detect bad emissions you get notified by mail by the state, and you can be sure its not a Hallmark greeting card either.
So i just leave the cat on as per the factory installation.

i did it and passed my smog test it helps wen you have a port and polish but i might of just got lucky at the smog shop tho but the time and work of doing it is not relly worth it not a big change just buy a hi flow cat

[eurohazard]

Originally Posted by Qslim

Are you for real? What, you think Chris Hanson is working with the FBI to catch people who try to circumnavigate the CARB restrictions? You sir, are paranoid.

It was a half-joke. "CARB" is the state of California, purposefully destroying (gutting), or removing your catalytic converter is a Federal crime. I'm actually not paranoid. Wait.....shhh.....did you hear that?

hehe

[MIC0417]

Originally Posted by eurohazard

It was a half-joke. "CARB" is the state of California, purposefully destroying (gutting), or removing your catalytic converter is a Federal crime. I'm actually not paranoid. Wait.....shhh.....did you hear that?

hehe

He lives in Tennesse, in the south I don't believe there are any states with regulations like that, nowhere else really just you Californians. As long as it moves you can get it inspected somewhere.

[w203]

heres a comment, don't bump your own thread less than 3 hours since its creation. you have no patience, those who want to post will....jeeze

and the power gain won't be felt, it'll not only harm the environment but you will waste time and or money hollowing it..

[Black95Cam]

Originally Posted by marc780

I dont know the smog laws in your state, but Here in Kalifornia they have begun using trailers at on ramps that measure your tailpipe emissions as you are waiting to get on the freeway! No fooling! They move the trailers around and if they detect bad emissions you get notified by mail by the state, and you can be sure its not a Hallmark greeting card either.
So i just leave the cat on as per the factory installation.

i have yet to see that.

DIY: replacing o.e. cat with a high flow