The APR cat-back exhaust system for the MK7 GTI comes standard with a single muffler with the option of adding our front triangular muffler at any time. The system sounds deep, throaty, and devoid of rasp and drone in all configurations. The single muffler setup will be perfect for most customers, especially those with the factory downpipe. When upgrading the downpipe, or going to a larger turbocharger, the system gets louder. For those who want it quieter, our drop-in front muffler makes for an excellent upgrade.