Evolution Link Pipe Set (Titanium) was tested and developed together with Evolution Line (Titanium).The Evolution link pipe set upgrades the Slip-On system to the Evolution system and is constructed from high-quality lightweight titanium. It is designed to increase power and torque and drastically reduce the backpressure. The system has been perfectly tuned to deliver the very best sound experience in all modes – enormous effort was invested to give it a sporty, deep higher-frequency V8 sound with an unmistakable Akrapovi? character, while keeping it smooth and eliminating any drone for maximum everyday comfort.When installing the Akrapovi? Evolution link pipe set, remapping the ECU is mandatory in order to prevent potential “check engine light” warning signals.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.