Integrated Engineering Cast Y-Pipe AdaptorEASY INSTALL TO YOUR STOCK EXHAUST IE's Y Pipe Adapter Kit is used to adapt either your IE Downpipe to a stock catback or your IE Catback to a stock downpipe. If you are using either of our exhaust components with a stock counterpart, this Y Pipe Kit includes everything needed to make it an easy bolt on solution. CAST CONSTRUCTION Using specialized 3D scanners and software, IE engineers can design odd shapes and sizes to maximize flow and conform into