Originally Posted by oldalaskaman

amen, I usta carry two guns, one for me and one for that a-h@@le who tried to shoot me first

Originally Posted by Z06supercharged

You can just register at a house in a non smog area of a county. The owner of the house you pick doesn't even have to know because you can have the dmv paperwork/renewal mail sent to a different address. I know a guy that didnt even know who lived where his car was registered. He drove up to North shore Tahoe found a cabin with a attached garage and used it. All his renewals came to his other address and cabin owner never knew his address was being used. Most out of the way cabins up at Tahoe for instance dont have mail delivery so another address is common for all mail.

It isnt a problem with cops if they ask whats up with 2 different addresses as you just tell them the car is garaged up there at your vacation home because your garage is full here in bay area but you bring it down to bay area sometimes so your drivers license can still have other address on it. Your DL address and car registration address do not have to match but DL must be your main residence if they ask.

And if you dont wanna do that you can go to the underground. There is a vast underground of smog techs that will not do a visual, and next year when no more sniffer test on 2000 and newer vehicles it will be even easier to cheat.

Originally Posted by hungryhippo

I didn't know about that new test. So are you saying we can't pass smog if our ECU has been altered?

Originally Posted by Z06supercharged

Problem with only a sniffer test, when a car is fully warmed up it pollutes much less than when warming up after a cold or semi cold start and this is what needs to be checked and they cant. Sniffer tests really are a lousy way to smog a car. The computer data tells much more by far.

In 2013 they will be checking sums for various data from current vs past information collected either by dealer or smog checks. If the check sums dont fall within a match range then you fail for further checking whats going on. This is where if you have changed you're tune after last smog check or dealer data gathering when warranty work was preformed the checksums will not match and you fail.
In short this is how it works:

At the smog test, they connect to your PCM via the OBD2 port and read these things (using Mode $09):
- CAL ID for each segment,
- CVN for each segment,
- VIN of your vehicle,

they then use the VIN to look up a database containing valid CAL ID and CVN values for your VIN (this is already in place for 2005+ cars);

the CVN's are like checksums; when tuning software writes to the PCM, the tuning software calculates what the CVN should be for each segment and writes it to the PCM; when you turn on the key, the PCM performs the same CVN calculation and expects to arrive at the same values;

if you have significant engine mods, you would have had your PCM tuned, which means the CVN for the engine segment now differs from original...

if you deleted codes, then the engine diagnostic segment CVN differs...

if you had your auto trans tuned, then the trans segment CVN differs...

if you changed your ring/pinion ratio, then your speedo segment CVN differs...

if you changed your fan on/off temperatures, then your system segment CVN differs...

[ if GM reflashed your PCM for some reason or other, CARB will know about it (since the PCM is an emissions device), and the new CAL ID and CVN will end up in the database ]

if your car is a 2005+ they will definitely see the differences in CVN values, and they will fail you;

if your car is 2000-2005 they may still be able to pick up on these differences, even tho they didn't legislate for a database for cars prior to 2005; that doesn't mean they don't have a means of looking up and checking (they have had the ability to store the CAL ID and CVN values from all your previous smog tests, and they have the computing ability to detect differences, they just can't necessarily compare them to the OEM values);

I'm glad I dont have to worry about this bulls***

Originally Posted by Z06supercharged

Dont know yet on that for sure but I am betting yes they will know just like GM knows if you have tune change back to stock for warranty work.

Originally Posted by BOUT X

My thing is having 2 ECU'S one to run on and one when I go in with the very first time when this starts buy it from dealer and the paper work with a tune on it hope to hell it works lol

Originally Posted by doje

I wonder how that'll work. If you show up with a modified tune you'll fail. Then you'll fail again because you brought the car back into compliance?

That's like failing someone because they put their stock manifolds back on the car.

Originally Posted by Mr.Bill

That sucks, Here in Nevada all they do is hook up to the OBDII port, They don't even open the hood.
Mr.Bill

Originally Posted by Exotica

For those with anything other than a stock car it's time to start considering all the loopholes in the system. Registering it in another county. Registering it out of state. Finding shops that will overlook the visual. Etc, etc, etc....

...considering the intent of CARB is no longer about doing the right thing for the environment but about making money

Originally Posted by ducpor

I've always wondered, do the average Tech guys at SMOG check locations see enough C6/C6Z06 to know the difference between stock and aftermarket headers?

Same for OP's catch can, if it was all black and not a bright color, how do they know it isn't factory?

Originally Posted by Shark Racer

Has anyone actually confirmed they're doing some kind of checksum testing against the calibration tables? Or are we just guessing?

No offense intended to Z06Supercharged, but I don't see this written in the law anywhere.