mdg

I agree. Did the same thing before I tested and I passed easily.

Rubrignitz

Yeah evap is common. Longtubes and hi-flow cats would have ruined your life as it did mine. Hard to pass with those.

grampa_stang

Yup. The evap error is normal too. You simply have to return to stock and drive through the cycles. You can also get wierd errors if you pull your battery, so don't try to pass emissions right away. Returning to stock resets the below sensors to "not ready" which is why you need to drive the cycle. This is from the manual

If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a “not ready for I/M test”
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
• First, at least 10 minutes of driving on an expressway or highway.
• Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.

157dB

Its in the owners manual under the battery removal/reinstallation section.

Negative cable off the battery for 20 minutes before the above procedure
and whenever you go from Stock CAI and tune to Aftermarket CAI and tune
to reset the adaptive learning in the PCM and get you back to normal/tuned quicker.