dont worry... as long as the engine sounds good, everyones gonna just turn their heads to see whats coming.. but make sure you dont have those racket creating street cheap silencer which are more like aluminum tubes that idiots call free flow silencers..
free flow silencer does not mean drilling holes in the stock silencer or getting a sheet of metal rolled and welded that just create ear aching head torturing racket wherever they go.. .
proper free flow silencers will sound good as the engine rpm goes up...
PS: i dont know if theres some strict rule in mumbai about DB limits.. but in my city, noone ever cares..