Adding the link pipe set is the second step in the exhaust tuning process. Combination with Slip-On Race Line retains the original Porsche GT3 exhaust manifold, utilizing the existing integrated catalytic convertors. The perfectly balanced titanium slip-on system and superbly fitting link pipes are all set off with a pair of beautiful titanium tailpipes. Developed primarily for track use, the Slip-On Race Line with Link Pipe Set (Titanium) increases power and torque levels and with the huge reduction in weight in the area behind the engine and the rear axle (in comparison to the original system) handling is improved to make the car and exhaust work in perfect harmony.When installing Akrapovi? aftermarket optional link pipes with sports catalytic converters or without catalytic converters, which are developed for use on closed tracks only, remapping the ECU is mandatory. When installing Akrapovi? aftermarket exhaust system that was developed for use on closed tracks, we recommend remapping the ECU in order to prevent potential »check engine light« warning signals.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.