Just to let you know, Hyundai has looked the other way on those. No one on any Hyundai and Kia sites that I searched before I put mine on has ever had Hyundai and Kia said anything to anyone to warn them about warranty when they have been installed. You are not changing anything, but putting in a tube that deletes turbulent muffler holes. Hyundai will warn/deny you if you change a blow off valve , or wastegate solenoid. I added mine around 1 month after buying my car.Thanx. I'm interested to give it ago but not until the car is off warranty.