FJ Cruiser exhaust - long tube headers, y pipe

like your FJ dude, but i have a question, i do have an FJ and recently added a Magnaflow catback system, it does sound good but not as loud as i want, so what do you recommend me to install considering that i don't want it to be too much loud i mean just like your car. One more thing, do you have the check engine mark on your car screen because of the headers ?

any drone at highway speeds?