As far as I know, it only unlocks. He has never locked it that way. I'll try it before I leave for work since he's off today.
I honestly do not know how he has it tuned, but I know he's in the garage changing it every once in awhile. He's taking it to the track this week so I'm sure I'll lose him to the garage for awhile again.
He's also been experimenting w/ that theory if you get fuel in the cooler morning hours, it'll increase economy. Myth or not, since he's been getting fuel around 615am vs 615pm, it's increased his mileage a bit. I know he gets better mileage than my civic.
.........I totally just realized how badly it shows that I've been out of the scene now, and that I don't care about cars. When I don't even know what my BF has on his car anymore...true sign of being out.