Porsche 981 GT4 / Boxster Spyder / Clubsport SOUL Street Package


Expect a sophisticated sound with valves closed and a flat-six wail with valves open by pairing our Valved Exhaust System with Long Tube Street Headers for performance gains without a check engine light. Soul Performance Products Long Tube Street Headers are built around large diameter, free flowing HJS HD 200 cell catalytic converters with long tube runners for maximum gains in power, throttle response, and flat-six engine tone. With valves closed the exhaust tone is perfect for a daily driven car – have no worries about being fatigued by excessive volume or droning. Once the valves open, be prepared to seduce all who surround you with an intoxicating symphony as the full tone of the flat six makes it way out the straight-through exhaust flow path and exits through stylish tips of your choosing. We’re proud to offer you the perfect exhaust solution and back it up with an industry leading Lifetime Warranty.

Soul Performance Products 981 GT4 / Boxster Spyder Valved Exhaust System
Soul Performance Products 981 GT4 / Boxster Spyder Long Tube Street Headers

Fits all 981 Porsche GT4 / Boxster Spyder / Clubsport vehicles (2015-2016)
+  Added performance without a check engine light
+  Direct bolt on installation – instructions included
+  Choose from a variety of tip styles and finishes – or customize your own!
+  All Soul Performance Products exhaust components are backed by a renowned Lifetime Warranty for both street and track use



DEVELOPMENT AND TESTING:  By creating a unique application for the 981 platform, we’ve focused on sizing the runners (2”) and collectors correctly to extract maximum power from the 3.4L engine while producing great gains from the 2.7L as well. We chose HJS HD 200 cell catalytic converters of an appropriate size to encourage maximum power gains. Don’t settle for smaller, cheaper catalysts when power and durability is concerned. We wanted to be certain that our system offered a superior spectrum of sound – Cup car inspired with valves open but with a refined, no droning tone with valves closed. The SOUL mufflers practically eliminate droning – even with aftermarket headers the sound is reserved with valves closed!

CONSTRUCTION: Our precision engineered headers are meticulously fabricated from T304L stainless steel.  Proven design elements including port matched flanges, smooth radius primary tubing, and collectors that optimize the exhaust flow all work in conjunction to maximize power gains. Every set is rigorously quality-checked prior to shipping. Each system is made from mandrel bent T304L stainless steel tubing and features mufflers with fortified casings in the interest of durability.

TIPS:  Choose from several different tip styles and finishes – from single wall 321 stainless tips to double wall chrome tips. Logo customization and custom tip colors are available by request. Titanium single wall tips are also available and save nearly a pound of weight over stainless steel tips!

HJS CATALYSTS:  The highest quality catalytic converters available, known for their industry leading flow and durability. They are efficient enough to meet strict EURO 4 emission standards while still allowing for an increase in flow – all without a check engine light. The HD design uses premium triple foil winding for maximum strength. The brazing stripe is an extra feature in the interest of durability – it prevents the core from moving or experiencing any damage from sustained high horsepower abuse. We use a large and appropriately sized catalyst to allow for maximum gains – no compromises here!

BOLT ON AND GO:  Each exhaust is rigorously quality-checked, tested in a fixture to guarantee fitment, and then foam packed to ensure it arrives in perfect condition. Thorough installation instructions are included in the box for a straightforward install that can be performed by most DIY enthusiasts.

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 an unprecedented 3 year warranty while the headers themselves are backed by our Lifetime Warranty.


  1. Feezy (Rennlist)

    I have a 981 Spyder that’s all stock, and a second one that I have modified. The second one started with a Soul valved exhaust which I was unsure about until I took delivery. I love the OEM PSE and didn’t think I would care for anything louder. After taking delivery and driving the car the Soul valved exhaust seemed to be be basically a PSE turned up to 11. It had a little bit more bark when the valves opened up but nothing outrageous. I felt like all the low end burbles were more significant and happened with more regularity, specifically at low rpm off throttle points. It was a little bit much, but not the end of the world. I quickly fell in love with it. After driving it a few months I decided to take the plunge and purchase the Soul street headers with the HFCs and add a Softronic tune to go along with it. After installing the headers I was a bit surprised at how quiet the car still was. Warmed it up with several trips around the block, nothing of any speed or RPMs, revved it a little bit. Got it back on the lift to listen and check for any exhaust leaks. It wasn’t until I got out on the freeway and drove the car to the point that the valves opened up that I heard the full extent of what I had done. It sounds glorious, but it’s not what I would call quiet. I’m a fan of low key tame exhausts, and this is not that. There is no drone, and it’s perfectly livable when you are driving the car like a normal human being, but when you get after it everyone knows. I keep going back and forth on if it’s too loud or not, I don’t really need or want attention (I say that with a bright red Spyder), but holy **** the car sounds good. I’ve heard it standing behind it while my neighbor revved it up to hear it, it really is a fantastic sound and tone. It’s just a touch loud. Drive both cars back to back, the biggest thing that stands out to me with the with the Soul exhaust & headers versus completely stock is the valves closed section. On both set ups when the vales are open it makes a lot of noise, the full Soul set up is several levels above the OEM car. It’s the valves closed around town driving that really stands out in the Soul car. While it’s relatively quiet and refined with no drone, there is absolutely more noise there than the stock car. It’s not obnoxious or detrimental to the experience, but it’s noticeable. When I drive the blue one it feels very under the radar and stealthy by comparison. All that being said I’m so happy with the Soul combo I hardly find myself reaching for the keys to the blue one these days when I want to take a car out. It’s about as loud as I would want a street car to be and it sounds exceptional. Seriously. The car now sounds like it looks.

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