K', cuz you asked and I think the Forum doesn't have enough of this info. for the California Vipers.

No nothing special. She's been full stock for a long while.

Just did the standard prep.

* Fresh oil change.
Old oil (Mobil 1 0w-40) was more than a year old but only had ~1200 miles on it.

New oil is Mobil 1 5w-40 and held back ~.5qts on the fill (just for the test).
Not saying going slightly shy on the fill made any difference. Just trying everything I can to get the 8.4L V10 monster to pass.

It probably would've made more sense to stick with 0w-40, but I was feeling lucky and it all worked out in the end.

And YES, after passing the test I topped the oil back up with the .5qts .

* GAS
Shell V-Power Premium in the tank (always).
Never let it go below 1/4 tank because (1)gotta cool the fuel pump and (2)never let the Evap. Monitor go Incomplete.
Also made sure it was slightly above 3/4 full at the time of the actual test.
I think this helps to satisfy the "Evaporative System Test".


The biggest issue this time around was that she hasn't spent enough time on the road.
She's only been driven ~1200 miles in the last 2 years (since the 2021 Smog Test).
As of today she's got 31,500 miles on the Odo.

About July last year I managed to let the battery go dead, so the Monitors got reset.
The bit of cruising we've done since managed to set all the O2 Monitor Tests Complete except for the "Bank2 Sensor 1 Lean to Rich sensor switch time" test.
Here's a screenshot from the TorquePro app.
O2Monitors_small.jpg


And the trace display proved the O2 sensor was funtioning just fine.
B2S1_trace.jpg


So I knew it was just a matter of hitting the O2 Monitor Drive Cycle.
Just the "O2 Monitor Drive Cycle":

**Driving Procedure
1) Idle vehicle for five minutes (to reach closed loop operation).
2) Drive with a steady vehicle speed above 25 mph for 2 minutes.
3) Stop and idle for 30 seconds.
4) Smoothly accelerate to a speed between 30 and 40 mph.
5) Repeat steps 3 & 4 five (5) times.

Which is easy enough if you can find the right road. During the 2021 Smog Test, I discovered a road very close to home that allowed us to execute the procedure at ~30mph (but still much easier said than done).
Plus a 20 mile run down the freeway at ~60 mph and all Monitors went Complete. Also didn't lug the engine or do any spirited driving during the Drive Cycle period.
And the moment all Monitors went COMPLETE, drove straight to the Smog Test place.
This time it took ~100 miles total.