Soul Performance Parts – 718 GT4 RS Performance Package (Street)

Before you buy

<p class="isSelectedEnd"><strong>DEVELOPMENT AND TESTING:</strong> Porsche’s introduction of the 718 GT4 RS represented the ultimate evolution of the mid-engined Cayman platform, showcasing the brand’s relentless pursuit of performance. Yet, as with any production vehicle, engineering compromises and regulatory requirements left untapped potential within the exhaust system. Our objective was clear: enhance the character of the GT3-derived 4.0-liter flat-six while unlocking the performance gains hidden behind the factory restrictions.</p> <p class="isSelectedEnd">Throughout development, the improvements in power delivery, throttle response, and sound quality were immediately apparent from behind the wheel. However, we wanted more than subjective impressions—we wanted measurable data.</p> <p class="isSelectedEnd">To achieve this, we partnered with M-Engineering, who generously provided access to their state-of-the-art dyno facility in Pompano Beach, Florida. Together with respected automotive content creator Mickey Hernandez of Miami Miles, we conducted extensive back-to-back testing across virtually every GT4 RS exhaust configuration we offer.</p> The goal was simple: quantify the performance gains available from each component and provide customers with transparent, unbiased data on what an exhaust upgrade can truly deliver. Whether upgrading a single section or installing a complete system, the results clearly demonstrate the benefits of optimizing exhaust flow throughout the platform—revealing performance that Porsche left on the table and allowing the GT4 RS to perform as its motorsport roots intended. The result is a complete exhaust package that combines uncompromising performance, an exhilarating motorsport-inspired soundtrack, and everyday usability. However, pursuing maximum flow and sound revealed an additional challenge that required attention: drone.