How long has it been since you disconnected the battery last? What he is saying is that the OBDII system is claiming it has not run through all of its tests yet and that's where the "not ready" is from. If everything is working properly. some additional driving should fix the issue.

Here's an exerpt from an emissions site explaining the issue:

What happens if my vehicle shows an unset readiness monitor
when an emissions test is performed?
An OBDII system constantly monitors individual emissions-control devices. Readiness
monitors indicate if these components have been fully evaluated or whether system
components have experienced any problems that prevent the vehicle from operating
as designed.
If the vehicle is in the process of resetting itself, the readiness monitor is said to be
“Not Ready.” Not ready monitors may be caused by a recently disconnected vehicle
battery, a low or dead battery, or as a result of work performed on the vehicle.
Readiness monitors remain not ready until the vehicle’s computer has had adequate
time while the vehicle is being driven to review the component or system.
The presence of “Not Ready” readiness monitors means that the vehicle cannot be
OBDII tested, as the information needed to make a pass/fail determination is not yet
available. Vehicles will fail the OBDII test if too many monitors are unset at the time
of testing. For 1996-2000 vehicles, three or more unset monitors will result in a test
failure. For 2001 and newer vehicles, two or more unset monitors will result in a test
failure. Additionally, if a vehicle fails the OBDII test with a catalytic converter
Diagnostic Trouble Code, the vehicle will fail the retest if the catalyst monitor is
not set to “Ready”.
To set the monitors to “Ready” the vehicle must complete its appropriate drive cycle.
Drive cycles are unique and specific to each make and model. Check your owner’s
manual or contact the vehicle manufacturer or a qualified service provider for more
information about drive cycles.

 

If the person was doing the test based on just plugging in the OBDII and no lights were on it will pass no problem, having said that with no cat you would have to sweet talk them with the visual part of the inspection because having no cat won't fly...

 

bottom line. no cat, no pass. in case you forgot, its a federal violation to mess with it.

 

Not true at all.

 

If they are just going by plugging it on the OBDII yes, yes it is...

I said if they do the visual inspection you have to figure out a way to get the inspector to ignore having no cat.

 

Did BYT turn off the cat warm up in your tune? Does idle high when it's cold? If that's turn off that could make not ready in obo2 scanner.

 

If all they were looking for is if an idiot light was on, there would be no need to even plug into the OBDII. They scan they complete is looking for more than just that. This is why more tuner programs are getting warrenty claims denied. They can tell if something has been altered that shouldn't have been.


In this case, it seems the OBDII test wouldn't complete, so it failed. Like not being able to read the cat....

 

Are you sure? In the Atlanta area, they do a visual, guy I go to is quick and only takes a couple of seconds with the mirror.

 

Most states with emission testing do an OBD and a visual.

Trying to "sweet talk" a shop into passing an altered vehicle is asking them to take a chance at; losing their license and a hefty fine.

 

Just to load your stock tune back in and you well pass.