I have repaired quite a few TZ250 ypvs units and also Rz500 YEC prototype units but I had never seen this one. It is an official F3 Kit part for the Tzr250 1KT - 2MA bike. Of course, it does feature it' s own unique racing exhaust valve timings, as to accompany the rest of the kit parts.
I just finished the repair of an ultra rare YPVS control unit, that belongs to Dan(UK).
You can find the Tzr250 KIT manual, in the below link that is also an excellent resource for all Yamaha 2T street bikes :