Is it good if i remove the silencer baffle for my Nobi exhaust.?

Depending what type of scooter or bike it is on you may have to rejet the carbs or put a power commander on to make everything operate more smoothly. It won't hurt anything really to take them out it will just make the exhaust louder, and if a performance difference is noticed afterward you might need jets or power commander to correct it, or if possible reinstall baffles.