Has anyone tried making/using a catalytic converter warmer?

[Christ]

Originally Posted by Duffman

CVCC - Wikipedia, the free encyclopedia
Not sure if it was built in the U.S.A or not but it violates your claim to "Must have a cat" past 75.

Regardless, what I said was, it was not mandated what equipment was required, it was the manufacturers reponsibility to meet the standards of tailpipe cleanlyness the best way they could.

Also, I was not accusing you of calling me arrogant, it is arrogant to say "I am right" as I did, but in this case I am.

CVCC engines were used in the US, yes.

Ok, so they didn't have to install them under law, my mistake. I apparently misread something, or read too far into it.

Back to the original topic that you brought back from I'm not sure how long ago - Yes, it's very possible to tune a vehicle to reach emissions standards without the use of a catalytic converter, even with computer controlled "emissions conscious" vehicles. It does, however, require the full ability to tune the fuel/ignition curves, among other things (hardware tuning) based on exhaust gas analysis rather than desired power output.

[Clev]

Originally Posted by Christ

Back to the original topic that you brought back from I'm not sure how long ago - Yes, it's very possible to tune a vehicle to reach emissions standards without the use of a catalytic converter, even with computer controlled "emissions conscious" vehicles. It does, however, require the full ability to tune the fuel/ignition curves, among other things (hardware tuning) based on exhaust gas analysis rather than desired power output.

They would probably still put in a cat, if for no other reason than it could provide a safety net should the rest of the system drift out of tune.

[mwebb]

...."

- Yes, it's very possible to tune a vehicle to reach emissions standards without the use of a catalytic converter,

."....
===============================================
which standards ?
if you are speaking of current OBD2 standards

then
the statement above is not true - not even a little .
================================================
regarding a cat converter heater
many cars have it , it is called
secondary air injection

[Christ]

Originally Posted by mwebb

...."

- Yes, it's very possible to tune a vehicle to reach emissions standards without the use of a catalytic converter,

."....
===============================================
which standards ?
if you are speaking of current OBD2 standards

then
the statement above is not true - not even a little .
================================================
regarding a cat converter heater
many cars have it , it is called
secondary air injection

We don't have emissions inspection around here, but I was referring to current tail pipe emissions standards. Nothing to do with visual testing. Around here (and in many other places) it's very easy to replace the cat with a lesser (hollow) version of itself and still pass emissions testing, including the visual portion.

[mwebb]

...."
We don't have emissions inspection around here, but I was referring to current tail pipe emissions standards. Nothing to do with visual testing. Around here (and in many other places) it's very easy to replace the cat with a lesser (hollow) version of itself and still pass emissions testing, including the visual portion."....

what you describe above
is a violation of federal law , in New York state it is good for a $10,000 fine .
i dunno about other states or locations

without a cat converter
an OBD2 system will not pass any emissions test that i am aware of anywhere in USA .
assuming the car has not be configured for a tighter emissions standard
like a - Partial Zero Emissions Vehicle -
OBD2 is the minimum ...."current tail pipe emissions standard"...

[Christ]

Do we really have to go through this yet again?

I'm well aware that removing the catalytic converter is a violation of federal law. I mentioned that a few posts back. There are special circumstances under which a vehicle that initially required a catalytic converter can be recertified to not have one legally.

Of course, I've never done that part.

I'm also well aware that it is entirely possibly to pass OBD2 emissions sniff test (tail pipe emissions), again, like I mentioned before, without a catalytic converter installed.

I'm also very aware of NYS emissions inspection procedure, since the shop I use (who wishes to remain nameless for various reasons) is a legal NYS inspection station and performs my tailpipe emissions testing.

Please, read the post before attempting to correct it. I never said that what I did was legal, nor did I ever say I cared. I simply said that it is possible to tune a vehicle to be within the limits of tailpipe emissions standards currently enforced without the use of a catalytic converter, and that's all I'm saying.

[mwebb]

..."I'm also well aware that it is entirely possibly to pass OBD2 emissions sniff test (tail pipe emissions), again, like I mentioned before, without a catalytic converter installed.

I'm also very aware of NYS emissions inspection procedure, since the shop I use (who wishes to remain nameless for various reasons) is a legal NYS inspection station and performs my tailpipe emissions testing. "....

==========================
i am a licensed NYS inspector and have been since
before the feet steps caps fist edge testing and have the
saep certificate from NYS DMV to prove it .

what you describe above is INcorrect - and outside of current protocol
there is no tailpipe "sniff test" for an OBD2 car in NYS
and
an OBD2 car will code for cat efficiency if the system has been tampered with by removing the cat
so even assuming the inspector was fooled by the visual , the car would fail the test anyway .

as all OBD2 monitors must have run and passed and (post 1998)
2 un run IM monitors are allowed 1998 back to 1996
MR CEL must be functional and OFF when the engine is running

outside of the 5 counties of NYMA there is no dyno "sniff test" requirement for pre OBD2 cars .

[Christ]

So you're trying to tell me that there is no tailpipe emissions test for PPM counts?

The shops I go to beg to differ...

[mwebb]

Originally Posted by Christ

So you're trying to tell me that there is no tailpipe emissions test for PPM counts?

The shops I go to beg to differ...

as a resident of PA
and a NON resident of NYS
and as someone who does not fix broken cars for a living .... you are excused from being aware of the following FACTs .

OBD1 cars that are manufactured prior to 1996
that are registered in the NYMA 5 counties do get dynomometer testing that is very close to IM240 testing - "sniff" tests as you call them .

cars manufactured prior to 1996 that are registered outside of the NYMA 5 counties DO NOT GET IM240 testing
and
NO OTHER cars registered in NYS anywhere are required to have the IM240 tests as a part of NYS emissions inspection

[Christ]

But there is still a federal emissions standard for new vehicles, which is what I've been referring to the whole time. Full Stop.

I live on the NYS border, so my easiest access to tailpipe emissions testing is in NYS. Full Stop.

I could care less about actual emissions laws, since they're based on BS and conjecture rather than actual performance of the vehicle. Full Stop.

Do you understand when it's in telegraph form?

At no point did I mention caring about NYS emissions laws. I know for a fact that I can get my vehicle tested in NYS using a tailpipe PPM emissions test at any time for a nominal fee, regardless of whether or not it's required legally.

In doing so, I've found that vehicles can be tested and pass US Federal Emissions standards' current revision for PPM counts WITHOUT the use of a catalytic converter.

What's so hard to understand?