Sleepers

[kevm14]

Having a 96 and up swap vehicle actually helps here, I think, since you can just program the VIN of the car into the PCM. I don't know if they're like "this is clearly swapped" but maybe no one typically cares and the plug-in reveals no codes and satisfactory system readiness.

[bill25]

A couple things:

Reconstructed and homemade vehicles: These vehicles are inspected for emissions compliance using the standards and test procedures applicable for exhaust emission, functional emissions control devices, and visual inspection for each individual vehicle - based on the engine year of the engine installed in the vehicle.

Maybe I just don't get it, but what does this concretely mean? Are they talking tailpipe test based on the engine installed, or check engine light? In RI they usually just check the light.

Also, for the G-Body, if you are not all set already, you will be very soon because RI doesn't even check emissions after they are a certain age. I thought is was 25 years but maybe that changed.

[bill25]

And what does this mean for turbos? I guess you could just have a Volkswagen super clean tune for the test if they actually check the tailpipe emissions.

[kevm14]

A couple things:

Reconstructed and homemade vehicles: These vehicles are inspected for emissions compliance using the standards and test procedures applicable for exhaust emission, functional emissions control devices, and visual inspection for each individual vehicle - based on the engine year of the engine installed in the vehicle.

Maybe I just don't get it, but what does this concretely mean? Are they talking tailpipe test based on the engine installed, or check engine light? In RI they usually just check the light.

Also, for the G-Body, if you are not all set already, you will be very soon because RI doesn't even check emissions after they are a certain age. I thought is was 25 years but maybe that changed.

I think it is 25, yes. 95 and older cars (OBD-I), until the car is 25 years old, require a sniffer test. After 25 years they still do the test but just to collect data.

[Adam]

Two more years for all my '94 cars!!

[kevm14]

Half of your 94 cars would pass safety so that's less helpful. But - I guess relevant for putting a 94 LT1 into a g-body if I understand the rules.

[Adam]

A couple things:

Reconstructed and homemade vehicles: These vehicles are inspected for emissions compliance using the standards and test procedures applicable for exhaust emission, functional emissions control devices, and visual inspection for each individual vehicle - based on the engine year of the engine installed in the vehicle.

Maybe I just don't get it, but what does this concretely mean? Are they talking tailpipe test based on the engine installed, or check engine light? In RI they usually just check the light.

Also, for the G-Body, if you are not all set already, you will be very soon because RI doesn't even check emissions after they are a certain age. I thought is was 25 years but maybe that changed.

I should mention the requirements were probably written 20 years ago and haven't been updated since.

So if they are testing based on the year of the engine installed, if you had a 1985 Monte SS with a 2004 LM7 5.3L engine, they would do the emissions portion of the test based on 2004 requirements.

I would suggest asking your local inspection station how a swap like your turbo LS into an older car would play out.

[Adam]

The 2004 requirements would be OBD-II plug in, no fault codes, system ready.

[Adam]

The 2004 requirements would be OBD-II plug in, no fault codes, system ready.

Also needs catalytic converters and probably a charcoal canister.

[Adam]

More:

Which vehicles will be OBD-II tested?

Vehicle model years 1996 and newer will require an OBD-II test. Light duty diesel powered vehicles are not eligible for the OBD-II test.


What is the procedure for the new OBD-II test?

The inspector will connect a communication cable from emissions analyzer to the Diagnostic Link Connector located in your vehicle. No changes to your vehicle will be made; only data from your vehicles computer will be downloaded to the emissions analyzer


Will this OBD-II test eliminate the enhanced emissions test on my vehicle?

If your vehicle is eligible for the OBD-II test, no tailpipe emissions test will be performed.


How can my vehicle fail an OBD-II test?

Your vehicle will fail the OBD-II test if the Malfunction Indicator Lamp (Check Engine) light is illuminated.
Your vehicle will also fail the OBD-II test if your vehicle model year is 1996 - 2000 and it has 3 or more system readiness monitors that read "not ready".
Your vehicle will also fail the OBD-II test if your vehicle model year is 2001 - present and it has 2 or more system readiness monitors that read "not ready".


My vehicle failed only for Monitor Readiness that read "not ready"

The computer in your vehicle performs diagnostic tests on certain emissions systems while you are driving. These system monitors are usually "Ready" or "Complete", unless there's pending problem with a particular system. Sometimes system monitors become "not ready" due to the battery in your vehicle having been disconnected or the computer having had its memory erased.
As part of the OBD-II test, the analyzer checks to see how many of the system monitors are "not ready".
Your vehicle will fail the OBD-II test if your vehicle model year is 1996 - 2000 and it has 3 or more system readiness monitors that read "not ready".
Your vehicle will fail the OBD-II test if your vehicle model year is 2001 - present and it has 2 or more system readiness monitors that read "not ready" .

The above are probably the emissions requirements for the hypothetical LM7-swapped '85 Monte Carlo.