redtan

iTrader: (5)

Some handhelds do turn off the rear o2 sensors, but if they don't then someone with access to that handheld's software will need to write a tune that you can then put on the handheld and flash it yourself.

You don't need a dyno tune to turn off codes, you just need someone with the real software (hptuners, efi live or any of the handheld's actual tuning software).

Midnight02

iTrader: (8)

Fellow Atlanta resident (Sandy Springs). Here's the scoop: you'll need someone to pull the codes out with the tune first. Once the codes are no longer an issue, you'll pass the OBD II test all day long.

The rub in Atlanta is the "visual" component of the test. Most testers will walk around with a mirror and look specifically for the cats. Finding a "blind" emissions tester is the hard part (however not impossible)!