Integrated Engineering Aluminum Charge Pipe KitThe IE Aluminum Charge Pipe Kit for Audi B9 S4, S5, A6, A7, & SQ5 eliminates factory bottlenecks and weak plastic materials for increased flow and strength. Our TIG welded individual billet hose ends provide a reliable crush proof base with grip lock ribbing to keep boost hoses securely in place in even the most demanding performance and hybrid turbo builds. INCREASE FLOW IE charge pipes are performance engineered to eliminate the stock equipped