obd II emmissions ?
Thread Starter
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
obd II emmissions ?
1996 lt1 auto.
no cats mufflers or resanator.
02 stims
all stock internals
LT hooker header 2151
ok
I disconnected my battery and then went to the emmissions place to see if i threw any codes which i did. this was free btw.
ok obviously it didnt go though a complete obd 2 cycle and came up as not ready.
BUT
it said EGR/ AIR not hooked up.
I took that out when i first did my headers because there were no smog provisions on my headers. can I just hook that stuff back in and then it wont throw that code?
what should I do
I live in atlanta georgia
your friend
Sean
no cats mufflers or resanator.
02 stims
all stock internals
LT hooker header 2151
ok
I disconnected my battery and then went to the emmissions place to see if i threw any codes which i did. this was free btw.
ok obviously it didnt go though a complete obd 2 cycle and came up as not ready.
BUT
it said EGR/ AIR not hooked up.
I took that out when i first did my headers because there were no smog provisions on my headers. can I just hook that stuff back in and then it wont throw that code?
what should I do
I live in atlanta georgia
your friendSean
Last edited by redbullapril23; Jul 13, 2005 at 08:51 PM.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
And you honestly expect to pass an ODBII emissions test without cats? 
I have so little sympathy for you right now, it ain't even funny. You avoid some minor emissions controls, that do more to keep your engine running smoothly and are now trying to figure out how to be reasonably legal. Too late, bud.
You need to get headers, or install manifolds, that are smog legal, then reinstall all the EGR hardware. That will get your EGR back on track.
This is an abstract, but have you ever considered installing cats?
Jeez.
I am done here.
I have so little sympathy for you right now, it ain't even funny. You avoid some minor emissions controls, that do more to keep your engine running smoothly and are now trying to figure out how to be reasonably legal. Too late, bud.
You need to get headers, or install manifolds, that are smog legal, then reinstall all the EGR hardware. That will get your EGR back on track.
This is an abstract, but have you ever considered installing cats?
Jeez.
I am done here.
Racer
Joined: Apr 2002
Posts: 342
Likes: 0
From: new orleans La
Shame on you for aggravating the Emissions Gods. you should be able to weld in bungs for the air pipes however if emissions testing is required in your area then you won't pass without the cats.
also based on your setup, you may have a bigger problem with noise pollution.
Thread Starter
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
well as soon as my random tech cats come in...jeez!
I just need to get emmissions so i can drive the dang thing.
but is there any way to get around the EGR or ghetto rig it for the tests?
I mean all it does is force extra air so that cats burn up all the pollutants but its not necessary especially if you have your car tuned right like myself.
thanks alot your friend
Sean
I just need to get emmissions so i can drive the dang thing.
but is there any way to get around the EGR or ghetto rig it for the tests?
I mean all it does is force extra air so that cats burn up all the pollutants but its not necessary especially if you have your car tuned right like myself.
thanks alot your friend
Sean
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Dear God, Sean... you have no clue what these components do. It's blatently obvious.
What "emissions test" are you going to pass if you have no cats and no EGR?
Not one I am aware of.
EGR = Exhaust Gas Recirculation. It has NOTHING to do with forcing air into the cats... that's another function. It has everything to do with bringing in exhaust gases and using them to lower combustion temperatures, which result in lowering NOX. On older motors, that's the only way to effectively lower NOX emissions. Chiefly, because NOX is not burned off by the cats.
You need to take that car to someone who knows what they are doing. You sure as hell don't.
What "emissions test" are you going to pass if you have no cats and no EGR?
Not one I am aware of.
EGR = Exhaust Gas Recirculation. It has NOTHING to do with forcing air into the cats... that's another function. It has everything to do with bringing in exhaust gases and using them to lower combustion temperatures, which result in lowering NOX. On older motors, that's the only way to effectively lower NOX emissions. Chiefly, because NOX is not burned off by the cats.
You need to take that car to someone who knows what they are doing. You sure as hell don't.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by bogus
Dear God, Sean... you have no clue what these components do. It's blatently obvious.
What "emissions test" are you going to pass if you have no cats and no EGR?
Not one I am aware of.
EGR = Exhaust Gas Recirculation. It has NOTHING to do with forcing air into the cats... that's another function. It has everything to do with bringing in exhaust gases and using them to lower combustion temperatures, which result in lowering NOX. On older motors, that's the only way to effectively lower NOX emissions. Chiefly, because NOX is not burned off by the cats.
You need to take that car to someone who knows what they are doing. You sure as hell don't.
What "emissions test" are you going to pass if you have no cats and no EGR?
Not one I am aware of.
EGR = Exhaust Gas Recirculation. It has NOTHING to do with forcing air into the cats... that's another function. It has everything to do with bringing in exhaust gases and using them to lower combustion temperatures, which result in lowering NOX. On older motors, that's the only way to effectively lower NOX emissions. Chiefly, because NOX is not burned off by the cats.
You need to take that car to someone who knows what they are doing. You sure as hell don't.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by Zix
I know of one...and it's called the OBDII emissions test! How do I know? Because I have no cats, no O2 sims, and no EGR/AIR (but the LT4 had an EGR blockoff anyway), and I pass with flying colors eveytime. There is no emissions test, just a computer test to make sure there are no codes and the systems are working. Well, the computer can easily be reprogrammed to say whatever you want it to.
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Thread Starter
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
Originally Posted by bogus
What "emissions test" are you going to pass if you have no cats and no EGR?
Not one I am aware of. You need to take that car to someone who knows what they are doing. You sure as hell don't.
Not one I am aware of. You need to take that car to someone who knows what they are doing. You sure as hell don't.
agian OBD II unless they require a visual like cali then i should pass.
I dont know if its necessary or not i have a block off plate on the EGR air. agian its not necessary. I went to the emissions place and all that it read was that car was not ready for emmissions because i hadnt driven it enough and that the egr air was not hooked up.
I mean i didnt know if that ment if I could still have it pass.
thats all i want to know.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by redbullapril23
agian OBD II unless they require a visual like cali then i should pass.
I dont know if its necessary or not i have a block off plate on the EGR air. agian its not necessary. I went to the emissions place and all that it read was that car was not ready for emmissions because i hadnt driven it enough and that the egr air was not hooked up.
I mean i didnt know if that ment if I could still have it pass.
thats all i want to know.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by redbullapril23
I went to the emissions place and all that it read was that car was not ready for emmissions because i hadnt driven it enough and that the egr air was not hooked up.
I mean i didnt know if that ment if I could still have it pass.
thats all i want to know.
I mean i didnt know if that ment if I could still have it pass.
thats all i want to know.
Bogus hit the nail on the head when he said, "Dear God, Sean... you have no clue what these components do. It's blatently obvious.". There is no such thing as "egr air". There is the EGR system and the AIR system. How can you modify an engine or know what to expect from making changes, if you don't even know what you are changing or what it does? I think the "metalurgest" (sic) needs a little more "edumaction" on how these things work. Have you been to www.helminc.com ?
RACE ON!!!
Thread Starter
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
knock me all u want my car is still faster
look man all they did was hook it up they didnt even run it
thats all it said
i didnt get it tested
the emissions guy did that to help me out and save me $ as i asked him to do that.
yes i understand the EGR/air are different
thats y in my origional post i used a slash and i missed it in a later post.
I am done with you guys
agian CFI EIF u have a corss fire
bogus u dont have an obd I lt1 and u even sauid u were wrong.
I mean im glad u guys have such expirence with my car
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by redbullapril23
knock me all u want my car is still faster
Originally Posted by redbullapril23
look man all they did was hook it up they didnt even run it
thats all it said
i didnt get it tested
the emissions guy did that to help me out and save me $ as i asked him to do that.:
thats all it said
i didnt get it tested
the emissions guy did that to help me out and save me $ as i asked him to do that.:
Originally Posted by redbullapril23
agian CFI EIF u have a corss fire
bogus u dont have an obd I lt1 and u even sauid u were wrong.
I mean im glad u guys have such expirence with my car
bogus u dont have an obd I lt1 and u even sauid u were wrong.
I mean im glad u guys have such expirence with my car
RACE ON!!!
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
To pass the visual you need to reinstall the components.
To pass the OBD II test, you need to understand what your states' requirements are. To my knowledge, all states will flunk an OBD II car that has the Service Engine Soon (SES) light illuminated. The illuminated SES can be addressed via PCM tuning. However, just because the tuning turns off the light doesn't mean it sets the associated drive cycle flags to "Pass". None the less, some states will pass an OBD II car with only a partial drive cycle completed/passed. Others are more strict. Drive cycle flags/status can be observed using a scan tool or software like AutoTap.
FWIW, in the '96s the AIR system has absolutely no impact on engine performance since the pump is electric. You save a couple pounds of weight and that's about it. Likewise with the EGR. As I recall the
EGR is only commanded open during part throttle and has no affect on WOT.
To pass the OBD II test, you need to understand what your states' requirements are. To my knowledge, all states will flunk an OBD II car that has the Service Engine Soon (SES) light illuminated. The illuminated SES can be addressed via PCM tuning. However, just because the tuning turns off the light doesn't mean it sets the associated drive cycle flags to "Pass". None the less, some states will pass an OBD II car with only a partial drive cycle completed/passed. Others are more strict. Drive cycle flags/status can be observed using a scan tool or software like AutoTap.
FWIW, in the '96s the AIR system has absolutely no impact on engine performance since the pump is electric. You save a couple pounds of weight and that's about it. Likewise with the EGR. As I recall the
EGR is only commanded open during part throttle and has no affect on WOT.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by redbullapril23
knock me all u want my car is still faster
look man all they did was hook it up they didnt even run it
thats all it said
i didnt get it tested
the emissions guy did that to help me out and save me $ as i asked him to do that.
yes i understand the EGR/air are different
thats y in my origional post i used a slash and i missed it in a later post.
I am done with you guys
agian CFI EIF u have a corss fire
bogus u dont have an obd I lt1 and u even sauid u were wrong.
I mean im glad u guys have such expirence with my car
Now, I have ODBI on my LT1... you have ODBII on your LT1? Whatever...
Some states have different tests...some only check the function. It's an attempt to speed up the emissions testing. Zix reminded me of this when he made his post. Delaware does the same thing.
Which means, if you are able to fake out the computer, you can pass the ODBII test.
Good luck. You don't know enough about how the systems work, let alone how to modify the damned computer.
Give it up.
Thread Starter
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
thanks guys this really helps. and yes even u bogus because you acctually said somthing helpful.
I bet i could get LT1 edit and have them to turn off the SES. correct?
any idea where i can find info on what georgia tests for as in partial or full all out.. i am guessin its partial as alot of the c5 guys around here have no cats, 02 stims, headers, etc.. and have no problems
I mean the reason for disconnecting the battery was to clear the codes and drive to see if they came back on... which it did so thats what im working with now!
that sounds good.
thanks alot your friend
Sean
I bet i could get LT1 edit and have them to turn off the SES. correct?
any idea where i can find info on what georgia tests for as in partial or full all out.. i am guessin its partial as alot of the c5 guys around here have no cats, 02 stims, headers, etc.. and have no problems
I mean the reason for disconnecting the battery was to clear the codes and drive to see if they came back on... which it did so thats what im working with now!
that sounds good.
thanks alot your friend
Sean
Melting Slicks
Joined: May 2002
Posts: 2,670
Likes: 4
From: Severna Park MD
Originally Posted by redbullapril23
thanks guys this really helps. and yes even u bogus because you acctually said somthing helpful.
I bet i could get LT1 edit and have them to turn off the SES. correct?
any idea where i can find info on what georgia tests for as in partial or full all out.. i am guessin its partial as alot of the c5 guys around here have no cats, 02 stims, headers, etc.. and have no problems
I mean the reason for disconnecting the battery was to clear the codes and drive to see if they came back on... which it did so thats what im working with now!
that sounds good.
thanks alot your friend
Sean
I bet i could get LT1 edit and have them to turn off the SES. correct?
any idea where i can find info on what georgia tests for as in partial or full all out.. i am guessin its partial as alot of the c5 guys around here have no cats, 02 stims, headers, etc.. and have no problems
I mean the reason for disconnecting the battery was to clear the codes and drive to see if they came back on... which it did so thats what im working with now!
that sounds good.
thanks alot your friend
Sean
After clearing the codes you need to drive the car some minimum of miles, 50 miles I think, before it will report ready for emissions check. This is to assure the car was not reset just down the block before entering the emissions station.
The AIR and EGR checks can be programmed out with LT1 edit. It was turned off in my last tune although I haven't yet yanked the plumbing. EGR through the pipe from the exhaust is redundant with the LT4 (or with a Hotcam) as valve overlap does the job to satisfy the NOx requirement.
Last edited by FELNGR8; Jul 13, 2005 at 09:31 PM.
Thread Starter
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
sweet sounds good I also just figured out that here in Ga, they just plug into the comp scan and then hand you a certificate.
which is what i was originally told I just had alot of ppl sayin it wasnt true.
thanks alot guys.
yea you have to complete a full OBDII drive cycle which I have the instructions for.
your friend
Sean
which is what i was originally told I just had alot of ppl sayin it wasnt true.
thanks alot guys.
yea you have to complete a full OBDII drive cycle which I have the instructions for.
your friend
Sean
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
My friend Sean,
To quote Will Smith from iRobot, "Some how 'I told ya' so'...just doesn't cut it." Most won't remember, but I clearly recall a thread from many months ago when you were passing bad advice to newbies who were none-the-wiser about passing emmissions without cats. I even stepped up and challenged you at the time on your statements, and all I got was a song and dance about GA this, GA that...OBDII...blah, blah, blah.
Now look who can't pass!!!!!
In the future, engage brain before putting mouth in gear.
Your friend,
Aaron
To quote Will Smith from iRobot, "Some how 'I told ya' so'...just doesn't cut it." Most won't remember, but I clearly recall a thread from many months ago when you were passing bad advice to newbies who were none-the-wiser about passing emmissions without cats. I even stepped up and challenged you at the time on your statements, and all I got was a song and dance about GA this, GA that...OBDII...blah, blah, blah.
Now look who can't pass!!!!!
In the future, engage brain before putting mouth in gear.
Your friend,
Aaron
Thread Starter
Drifting
Joined: Aug 2004
Posts: 1,830
Likes: 1
From: atlanta Georgia
look man i havent even gotten tested... so huh?
I was just didnt know how to get rid of that code to pass.
I am gettin lt1 edit next week and then going to emissions
i will pass no problems.
with 02 stims an LT1 edit you have no prob.
end of discussion!
shows how many friends I got
life is to short to be mad
your friend
Sean
I was just didnt know how to get rid of that code to pass.
I am gettin lt1 edit next week and then going to emissions
i will pass no problems.
with 02 stims an LT1 edit you have no prob.
end of discussion!
shows how many friends I got
life is to short to be mad
your friend
Sean