Evolution Header Set converts the slip-on system into a full Evolution Line system designed to give noticeably increased power at higher revs. With superb attention to detail, including parts cast in AkrapovicÕs own titanium foundry, the craftsmanship and coating finish on the system is a joy to behold. With a newly developed exhaust manifold, incorporating 100 cpsi sports catalytic convertors and side mufflersÑall designed to increase power and torqueÑthe Evolution Line utilizes integrated catalytic convertors and the functionality of the new exhaust valves to deliver an out-and-out attack on the senses. With the valves in the open position, the Evolution Line sounds like the top-performing Evolution Race system, but also has the option of a lower sound level when the valves are closed, perfect for use in more everyday locations. Offering an increased weight savings in the area behind the engine and the rear axle, the reduction will enhance the handling and improve performance. The Evolution Line is also tuned to deliver a sportier and hard-hitting soundÑin open valve mode, the more the engine is revved the better the sound getsÑas well as increasing performance, all to provide an even greater sensory experience. When installing Akrapovic 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 Akrapovic aftermarket exhaust system that was developed for use on closed tracks, we recommend remapping the ECU in order to prevent potential Ècheck engine lightÇ warning signals. THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE. Technical Data: Unit Stock Akrapovic Max gain kW 345.7 / 8450 rpm 351.2 / 8400 rpm + 10.0 / 8000 rpm HP (m) 470.0 / 8450 rpm 477.5 / 8400 rpm + 13.6 / 8000 rpm HP (i) 463.6 / 8450 rpm 471.0 / 8400 rpm + 13.4 / 8000 rpm Nm 426.2 / 6450 rpm 437.4 / 6350 rpm + 27.3 / 3850 rpm lb-ft 314.3 / 6450 rpm 322.6 / 6350 rpm + 20.1 / 3850 rpm kg 38.9 24.8 - 14.1 lb 85.8 54.7 - 31.1 % - 36.2 min 200 Fitments Akrapovic Evolution Header Set (Titanium) for Porsche 991.2 GT3/RS - E-PO/T/4 E-PO/T/4 Porsche - 911 GT3 RS (991) (2014 - 2017) Porsche - 911 GT3 (991) (2014 - 2017) Porsche - 911 GT3 RS (991.2) (2018 - 2020) Porsche - 911 GT3 / GT3 Touring (991.2) (2018 - 2019) Evolution Header Set (Titanium) RS - E-PO/T/4 Evolution Header Set (Titanium) RS - E-PO/T/4 Schematic new version: Performance graph: Installation instructions - EN: POS HF: Evolution Header Set (Titanium) RS - E-PO/T/4 STOCK EXHAUST; PORSCHE GT3 EVOLUTION; PORSCHE GT3 Evolution Header Set (Titanium) RS - E-PO/T/4
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