The closest I remember seeing is in Sprawl Sites, way back in the old days (c. 2050).
Smartgun links/Weapon targeting enhancements were 5,000¥ fine
Reflex Enhancements/Vehicle Control Rigs were 20,000¥ fine
Cyberweapons & such were 10 years in jail.
Now, 2050 was VERY different than the current 2073 era (and I ain't just talking about inflation). In this case here's what I'd do if he got caught:
First, he'd get a Criminal SIN. So, he automatically gets that Negative quality (it's up to you whether to give him Karma for that, but I'm a bastard and wouldn't). With the Criminal SIN, he gets entered into the database, with a complete listing of all his augmentations and DNA samples.
The basis of the punishment, I'd hand out based on what level of Move-By-Wire he has. It all comes to the Availability/Restriction. If it's only Restricted, then I'd give him a fine (500¥ * Availability rating). This makes a Rating 2 Move-By-Wire a 9,000¥ fine. If it's Forbidden, then we're talking possible Jail Time. I'd give him the choice of either 1,000¥*Availability or [Availability] Months in jail. So, Rating 3 MBW would be either 25,000¥ or 25 months in jail.
Again, depending on the Legality of the system, he'd either walk away with it still installed minus the fine and a newly purchased license (Restricted) or they may just take him to the operating table to remove it from his body (after all, Forbidden means that he is NOT allowed to possess it--at all).