I30 N exhaust fitted to Elantra GT

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.

I installed exactly what's pictured above. It sounds great, better than the stock exhaust, but also gives the option of a quieter and louder setting with the valve opened or closed.

As for how to wire it, I had someone do it for me. @Justink posted two videos on youtube that explain how to do it. While these are for a Veloster N exhaust, it should work the same.