In addition to the bespoke muffler design, there are several other unique characteristics we’ve brought into play on this system which revolve around the secondary flow path entering the muffler. These characteristics combined were crucial towards reducing and smoothing out the drone in the 1,800-3,000rpm range while enhancing that higher pitched note we were after in both the valves closed and open conditions. We incorporated a second internal X-pipe to allow the exhaust flow to merge smoothly. It has little to no restriction in the flow path, using straight through piping that is perforated to allow exhaust gasses to escape and become muffled in the surrounding packing material of the muffler body. This muffler was crafted to match our high standard of drone fighting mufflers like the rest of our existing Boxster / Cayman line that we have become known for. With valves closed, the exhaust is routed through smaller piping and a bespoke SOUL muffler we designed to fit with the X-Pipe in the confined space above the rear diffuser and meet our sound goals. With valves open, our Valved Exhaust System follows a similar design to our Race Exhaust System through an X-Pipe that merges the exhaust flow for a higher pitched, smooth sound. Achieve an effective delta in sound between both modes for two usable, well engineered experiences – mild and wild.Offer the ability to notably reduce the sound level of the car outside to fly under the radar when necessary.Heighten aggressiveness with valves open while maintaining an overall sound level potential / quality that can still be reasonably driven on the street in combination with other complimentary aftermarket exhaust components – such as competition over axle pipes and header replacements.Increase the presence and character of the exhaust note in the cabin while maintaining a reasonable level of resonance / drone while driving in both the valves closed and open modes through our signature drone fighting capabilities.Improve upon the factory design and achieve a throatier / smoother / higher pitched tone.Designed and built in-house at our Willow Grove, PA facility.All Soul Performance Products exhaust components are backed by the industry’s first and finest Lifetime Warranty for both street and track use.Weighs approximately the same as OEM PSE (37 lbs).Contact us for a European conversion kit (at additional cost). European vehicles use a different mounting style than North American vehicles. Fits all Porsche 718 GT4 / Spyder / GTS 4.0L vehicles (2020+) in North America.Engineered to pair well and not be overbearing with other aftermarket mods like over axle pipes and headers. Valves closed mode calms down the volume for refined cruising with just enough presence to be appreciated. Valves open mode elicits a smooth, sporty GT3-like tone for an invigorating driving experience. ![]() ![]() With two distinct tones, SOUL’s Valved Exhaust offers a significant sound improvement over factory PSE through a bespoke X-pipe muffler and anti-drone design features. SOUL 20+ Porsche 718 Cayman GT4 / Spyder / GTS Valved Exhaust System Reuse Tips No Valve Controller
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