Yes, I have it & love it. If you can get one at a reasonable price, I definitely recommend it. Most in North America will go with the Veloster N exhaust since it's usually easier to get. I wanted to try the I30N exhaust because I thought it'd be easier to fit to the Elantra GT N Line than the Veloster N's. While the I30N exhaust tips are bigger than our stock ones, they are still smaller than the Veloster N's tips & fit perfectly in the cutouts for the Elantra GT N Line. But know that the exhaust width is narrower and will have to be adjusted.
As for the sound, it sounds great IMO. It's a little louder than the stock exhaust, with the valve closed, and obviously louder once opened, but still not so loud that neighbors will complain.
As for the sound, it sounds great IMO. It's a little louder than the stock exhaust, with the valve closed, and obviously louder once opened, but still not so loud that neighbors will complain.