Porsche 992 GT3 RS SOUL Valved Exhaust Packages: Unleash Precision Sound and Performance

Add a refined level of aggression and excitement to your 992 GT3 or GT3 RS with a SOUL header and muffler package. The Porsche 992 GT3 RS SOUL Valved Exhaust Packages feature long tube runners and CNC’ed merge collectors that optimize flow through the headers into a bespoke x-chamber muffler (valves closed path) and a large diameter x-pipe (valves open path). For a higher-pitched, smoother sound. Enjoy the enhanced tone and responsiveness with volume controlled by your right foot!

DETAILS
+  Fits all Porsche 992 GT3 / GT3 RS models (2022+), and 991 Speedster

Description

Replacing the heavy and restrictive factory headers is central to improving performance. By pursuing a full system replacement we can eliminate the restrictive cat assemblies, the “particulate filters”, and the giant 7 ⅝ connection point to the factory rear muffler assembly. A simple flange optimization to our previous generation GT3 Competition Headers allows us to get rid of the factory 991 gen connection point. Requiring costly OEM clamps and donut gaskets and utilize a more efficient v-band connection point.

Even a premier engineering masterpiece like the GT3 comes from Porsche fitted with exhaust manifolds restricted in terms of primary tubing length, runner diameter, and merge collection efficiency due to dense catalytic converters, mass production, emissions and sound restriction compromises.

By refining the interface between the flange/primary tubes, using smooth radius large diameter bends, and implementing performance oriented collectors with merge spikes, we have been able to achieve increased flow, response, and performance with a more aggressive exhaust note to match. A slip on merge collector was not considered to prevent any chances of exhaust leaks. Instead we focused on designing a high flow collector from CAD to CNC for a no compromise end result. This bespoke billet collector allows for maximized runner length and the elimination of several welds in the interest of durability. Our billet CNC head flanges allow for a more efficient transition from exhaust ports into the runners and adds extra strength in a high stress area preventing the chances for any cracking from repeated, hard use during track days.

REAR EXHAUST SECTION

With limited room under the vehicle. We had to craft an intricate solution and loop the exhaust to keep the cats in line after the headers to maximize exhaust velocity. A muffler proved to be the most effective way to reduce the drone level under 3k rpm enough to meet our goals for reduced cabin presence for an exciting touring level of sound.

With valves open, exhaust is free to flow through 3” piping and an x-pipe that merges the exhaust flow for a higher pitched, smooth sound with maximum flow characteristics. With the valves closed, the system routes the exhaust through secondary flow path piping and a bespoke SOUL muffler.. The internal design has little to no restriction in the flow path. Using straight-through perforated piping allows exhaust gases to escape and become muffled in the surrounding packing material of the muffler body.

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. The key thing to note here is that the valve’s open flow path is not limited to the external x-pipe flow path. As some of the exhaust flow is still going through the secondary flow path, even when the valves are open. This design is essentially utilizing the entire secondary flow path and muffler design. To smooth out the tone and drone in valve-open mode as well. Utilizing this secondary flow path for the cruising cabin presence.

The catted/catless sections are interchangeable. You can reduce the chance of CELs with 200-cell cats and tone down the exhaust if need be, or you can run the catless section to amp up the fun and performance on track. We also utilize a tip plate (same style as used on 991 GT3s). Allowing one to switch between tip assemblies/styles.

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VALVE CONTROL

The exhaust valves on this car have electronic actuators mounted to a free-moving mechanical valve body. Factory exhaust valve programming keeps the valves closed until 4k rpm, then gradually opens them from 4k to 5k rpm. At which point they become fully open. With PSE on, you can rev the car with the valves open, but as soon as you accelerate. They close again, repeating the same cycle up to 4k rpm with progressive opening to 5k.

• Aggressive at wide open throttle when valves begin opening at 4k. Then fully open at 5k. A streetable, reasonable level of volume on command compared to a muffler-less system that is loud at all times.

CONSTRUCTION:

We assemble each system in the USA using mandrel-bent, thick-wall .065″ T304L stainless steel. Our team precision-cuts. The billet 304L stainless steel head flanges and merge collector are machined on a 5-axis CNC machine. To ensure optimal exhaust flow and strength. Back purged TIG welding</a> (with ARCAL™ Prime argon gas) ensures proper weld penetration and longevity. Crucial for durability on the track. We fabricate the headers and system using thick-gauge aluminum fixtures. Which acts as a great heat sink during the welding process and prevents warping not only of our products. But the fixtures themselves to ensure perfect fitment.

<p>CERAMIC COATING:   Jet-Hot ceramic coating is available for specific configurations at an additional charge. Extreme (1300) or Ultra Extreme Heat (2500) coatings can lower surrounding temperatures by up to 65% and protect from thermal oxidation and corrosion. Please contact us for more information and a quote.

CHECK ENGINE LIGHT?</strong>

The catless Competition version may trigger a check engine light due to the removal of factory catalytic converters. We suggest a custom ECU tune to disable any check engine lights (for track use only).

<p><p><p><p><b>BOLT ON AND GO:  Every set is rigorously quality-checked before shipping and then foam-packed. To ensure your order arrives in perfect condition.<p><b>LIFETIME WARRANTY:  Enjoy your SOUL exhaust components with confidence on both the street and track as they are covered for life! Our team will quickly work with you to resolve any issues or answer any questions that you may have. We cover our HJS catalytic converters with a 3-year warranty while the headers themselves are backed by our ener noreferrer”>Lifetime Warranty</a>.<h5><strong>NOTES
+  This product is not CARB certified and may not be legal for use on emissions-controlled vehicles; intended for closed-course competition use only
+  United States-based customers purchasing this product are required to sign our Catless Exhaust Component Waiver get=”blank” rel=”noopener”>here.</p>