I want to gut my converter, and I had a few questions about it:

1. What is the difference between an OBD1 and an OBD2 catalytic converter ?

2. Will this affect the car negatively in any way ?

3. How much HP will I gain ?

4. Can I do it myself , and if so...how ??

Thanks in adavnce for your input ....

 

1. OBD1 catalytic converter does not accomodate a secondary o2 sensor like an OBD2 cat does.

2. You will be emitting harmful gases into the atmosphere and you will smell the fumes when you are at WOT for a few seconds or more.

3. IMO, none. My test pipe and my 2.5" hi flow cat made the same power on the dyno. sounded the same, same hp/tq, only difference was the smell.

4. You can do it yourself. I have never done it, but you can find out from someone on here how to do it. I'm sure the catalyst material can be broken up with a long screwdriver or something similar.

I personally wouldn't do it.

 

If you want a test pipe, buy/make one.

It's not expensive.

It does not make sense to knowingly destroy something as expensive as an OEM cat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Reid &raquo;</TD></TR><TR><TD CLASS="quote">If you want a test pipe, buy/make one.

It's not expensive.

It does not make sense to knowingly destroy something as expensive as an OEM cat.</TD></TR></TABLE>
good point, i have also heard that people lose HP when gutting a stock cat as the air does not flow thru as well. no first hand knowledge though

 

Its not worth the hassle and environmental detriment.

Leave well enough alone.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Reid &raquo;</TD></TR><TR><TD CLASS="quote">If you want a test pipe, buy/make one.

It's not expensive.

It does not make sense to knowingly destroy something as expensive as an OEM cat.</TD></TR></TABLE>

I must have been smelling too many fumes in my car at lunch today.

I swear Reid wrote something about getting a free high in his post above.

Damn mods.

 

Despite what people say I gutted mine.

https://honda-tech.com/zerothread?id=475420

Yes, it made a difference believe it or not. At high rpms..

BTW, I'm OBD1. Don't even think about it if you're OBD2.

EDIT: buying a used cat isn't expensive, especially here on H-T. A guy on here a while back sold his ITR cat for 35$... (I know because he owed the money to me )

 

Do you always feel the need for double posting??

https://honda-tech.com/zerothread?id=504366

 

got his test pipe made for $30 or $40

 

Someone correct me if im wrong, but gutting your cat just causes a disturbance in the flow of air, hence hurting performence. I can see getting a straight pipe or even a high-flow cat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by r1zen &raquo;</TD></TR><TR><TD CLASS="quote">Someone correct me if im wrong, but gutting your cat just causes a disturbance in the flow of air, hence hurting performence. I can see getting a straight pipe or even a high-flow cat.</TD></TR></TABLE>

I think it's useless to talk about that little theory among honda drivers untill someone can prove it. In my case, I feel that I gained a little power at high rpms.

Of course.. only a dyno will show the truth. Maybe I've lose some power somewhere else in the powerband.. but as far as I can tell it's done good. I like it.

 

Stopping spamming the same thing in other forms!
https://honda-tech.com/zerothread?id=504366

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ragejed &raquo;</TD></TR><TR><TD CLASS="quote">Stopping spamming the same thing in other forms!
https://honda-tech.com/zerothread?id=504366</TD></TR></TABLE>

Why are there now two posts to the other (much more useless) thread on this same topic???