Its like wanting horsepower and fuel economy you have to do one or the other. id say get the bpipe and do the pisser mod and start riding, be as polite as possible and be nice to your neighbors. Maybe try to ride a bit away from their property and hope that works because as mentioned in order to get more power it starts with opening up the motor to breath. either run the stock and be happy with what you have or mod up to a bpipe and just hope you don't get the cops on you. its a gamble but maybe get to know them a bit and use a friendship as a little insurance from any issues like that happening. Maybe there are other places near you that you can go to change up your schedule so you don't bother them everyday and maybe just once in awhile. Tough position, i don't envy lol. Good luck