This depends on the model you purchase. Some resonators come with ports that can be easily added you your exhaust, but some need to be welded in place. If you happen to have the equipment and experience, this is something that you will be able to achieve at home, though most will need to seek professional help or advice from a mechanic. Just keep in mind that if you want or need to go to a mechanic that you will have to factor in paying for labour when deciding on what your budget is going to be.