SOUL Performance Street Long-Tube Headers for 991.1 Porsche 911 Carrera [POR.9911.STH]
$4,855.00
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SOUL Performance Street Long-Tube Headers for 991.1 Porsche 911 Carrera
Two-inch T304L primaries and SOUL’s own 300-cell catalytic converters that free the naturally aspirated flat-six for a stronger mid-range and a deeper tone, engineered to bolt on and stay check-engine-light free.
These items are typically not in stock and either made-to-order or special order from the manufacturer. After you order we will confirm the estimated lead time and other order details. If you have a specific deadline to receive this order please talk to us before placing your order to ensure that the manufacturer can meet your expectations.
This item and any similar items are not CARB approved and therefore not for sale in the state of California or other states that require CARB certification. No assessment is being made regarding this product's compliance with the EPA's anti tampering policy, only that the necessary testing and validation has not been completed. Please check with your local enforcement officials regarding legality of use in your place of residence.
SOUL Performance Street Long-Tube Headers for 991.1 Porsche 911 Carrera
SOUL Performance’s Street Long-Tube Headers for the 991.1 Porsche 911 Carrera give the naturally aspirated flat-six the exhaust manifold it should have had from the factory. SOUL designs and builds these headers in-house at its Willow Grove, Pennsylvania facility, where 2-inch T304L stainless primaries, merge-spiked collectors, and the brand’s own 300-cell catalytic converters are water-jet-cut, fixture-tested, and assembled to ISO 9001:2015 standards. The payoff is measured, not promised: independent Mustang-dyno testing at Apex Autowerks recorded peak gains of 9 whp and 13 lb-ft, with well over 25 whp and 25 lb-ft freed up through the mid-range near 3,000 rpm, the part of the band you actually drive in, along with a deeper, more purposeful flat-six voice. For the 991.1 owner who wants the engine to breathe without a check-engine light or a hit to reliability, these are headers built to be driven hard and backed for life.
Development and Testing
SOUL treated the mass-produced factory 991.1 header as the compromise it is and started over with a 991.1-specific design. The primaries are sized at 2 inches to suit the 3.8-liter engine while still pulling strong gains from the 3.4-liter, and every set is proven on a thick aluminum test-fit fixture before it ships, so the flanges seat true and the runners clear on the car rather than only on paper.
Construction
The headers are built from T304L stainless steel with merge spikes that feed the collector for cleaner scavenging, thick water-jet-cut flanges, and SOUL’s own US-produced 300-cell catalytic converters running a custom precious-metal coating over a triple metal matrix core. Assembly follows ISO 9001:2015 quality standards, and each finished set is foam-packed to arrive in the condition it left Willow Grove.
Power and Sound
On an independent Mustang dyno at Apex Autowerks the headers returned repeatable peak gains of 9 whp and 13 lb-ft, with the mid-range telling the real story: well over 25 whp and 25 lb-ft at around 3,000 rpm, where daily driving lives. An ECU tune is not required, though owners who add one see further gains above 5,000 rpm. The flat-six picks up a deeper, richer tone that grows more present through the mid and upper rpm, and more pronounced again on cars fitted with Porsche Sport Exhaust.
Bolt-On and Go
New high-grade header hardware is included, along with SOUL’s own installation guide, and many 991.1 owners fit the headers at home with the car safely supported. Given the access the job requires on a 911, professional installation is still the safe call for anyone without the tools or the lift time.
Features
2-inch T304L stainless steel primaries with merge-spiked, optimized collectors
SOUL-designed, US-produced 300-cell catalytic converters (custom precious-metal coating over a triple metal matrix core)
Thick, water-jet-cut flanges assembled to ISO 9001:2015 standards
Every set test-fitted in a thick aluminum fixture, then foam-packed
Independent Apex Autowerks Mustang-dyno gains: 9 whp and 13 lb-ft peak, 25+ whp and 25+ lb-ft through the mid-range near 3,000 rpm
New installation hardware and a SOUL installation guide included in the box
Backed by the SOUL Lifetime Warranty for the original owner, street and track
Designed and manufactured in the USA (Willow Grove, Pennsylvania)
Applications
Porsche 911 Carrera / Carrera 4: 991.1 | 2012-2016 | 3.4L naturally aspirated flat-six
Porsche 911 Carrera S / Carrera 4S / GTS: 991.1 | 2012-2016 | 3.8L naturally aspirated flat-six
Notes
The SOUL Performance Street Long-Tube Headers are sold as a complete header set with the required mounting hardware included
An ECU tune is not required, though it adds further gains above 5,000 rpm
Not CARB certified and intended for closed-course competition use; it may not meet emissions requirements for registered vehicles in some regions
Covered by the SOUL Lifetime Warranty against defects in materials and workmanship for the original owner, for street and track use
Frequently Asked Questions
Do the SOUL Performance Street Long-Tube Headers fit every 991.1 Porsche 911 Carrera? Yes. They fit all 2012-2016 991.1 Carrera models, including the Carrera, Carrera S, Carrera 4 and 4S, and GTS, across both the 3.4-liter and 3.8-liter naturally aspirated flat-six engines. They are not designed for the 991.2, which uses the 3.0-liter twin-turbo engine, so confirm your model year before ordering.
Will these headers trigger a check-engine light? No. The SOUL Performance Street Long-Tube Headers run SOUL’s own 300-cell catalytic converters with a custom precious-metal coating, designed to keep the factory emissions system satisfied and avoid a check-engine light when installed and used as intended. Results can vary with other modifications or a tune.
How much power do they add? Independent Mustang-dyno testing at Apex Autowerks recorded repeatable peak gains of 9 whp and 13 lb-ft. The larger gains come through the mid-range, well over 25 whp and 25 lb-ft near 3,000 rpm, where most driving happens. An ECU tune adds more above 5,000 rpm but is not required.
How do they change the sound? They give the flat-six a deeper, richer tone with more presence through the mid and upper rpm, without droning at a cruise. The effect is stronger on cars fitted with Porsche Sport Exhaust, and grows more pronounced as the engine climbs toward redline.
Is an ECU tune required? No. The headers deliver their mid-range gains on a stock tune, so they work as a standalone upgrade. A tune is optional and mainly helps owners chase the additional top-end power above 5,000 rpm, alongside other supporting modifications.
Are these headers street legal? No. They are not CARB certified and are sold for closed-course competition use, so they may not be legal for registered street vehicles in California or other emissions-controlled areas. Check your local regulations before installing and driving on public roads.
About SOUL Performance
SOUL Performance Products was founded by a group of automotive enthusiasts with deep industry experience and a commitment to doing right by their customers. Their mission is to deliver outstanding performance parts at fair pricing, backed by quality service and one of the best warranties in the industry. SOUL develops high-performance exhaust systems and components that are engineered for exceptional sound and proven performance, with products ready to ship quickly worldwide. Guided by core values of honesty, transparency, and passion for cars, they build strong community connections and prioritize customer satisfaction at every step. Operating out of a dedicated facility in Willow Grove, Pennsylvania, SOUL combines hands-on research, engineering, and manufacturing expertise to create parts that meet and exceed the demands of serious enthusiasts.
Additional Information
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Shipping Policy
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Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.
BP Pricing Difference
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We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well.
For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.
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