In this case study, you see this Subaru Impreza WRX STI at the DKU Performance platform for installing its custom cat-back. Since DKU Performance specialises in designing and manufacturing custom exhaust systems for all kinds of vehicles, we have fabricated our high-quality stainless-steel cat-back exhaust system in this vehicle to make it as loud as we can. This Subaru WRX STI Version 12 is sporting our very own designed and built DKU performance custom cat-back exhaust system, featuring a 3’ bore size and mandrel bend for the optimal flow of exhaust. This modification is ended up by installing a pair of Jap style tips, 2x rear custom silencers and blue burnt titanium style tips for the enhancement of its beauty. Watch the full video to see the comparison at the end. This car sounds more than amazing after installing its exhaust system by DKU Performance.