If you want a quiet ride, don’t do either. The average person doesn’t care what their car sounds like. They want a car that’s not obnoxious. However, if you’re into performance and you want your car to sound like the beast it is, you may be considering removing one or the other. Removing your muffler will definitely give you a louder sound, but it may be illegal, so be careful. However, removing your muffler could also help increase exhaust flow, which gives you better performance, too. Removing your resonator won’t make your car any louder, but it could eliminate some unnecessary weight while still obeying the law.