Are modern Ms. Pac-Man cabinets distributed with the “fast/speed/speed-up” setting/hack/mod turned on by default?

Solution 1:

It seems like the Namco 20th and 25th Anniversary cabinets have the Turbo variants of Pac-Man and Ms. Pac-Man, but it is disabled by factory default. The turbo variants can be enabled from the service menu as explained in the owner’s manual for the Ms. Pac-Man/Galaga model 9600.

Turbo can also be be toggled on by using the following code: After inserting credits, press Left, Right, Left, Right, Up, Up, Up, Fire. If done correctly, you should hear the "wakka" Pac-Man sound as explained on this Wikipedia page that lists details on Pac-Man anniversary arcade machines.

The 30th Anniversary Pac-Man's Arcade Party also has speed settings in the service menu as explained in this official operator’s manual.