Soul Competition Stainless Steel Exhaust Headers – Porsche 981 GT4 & Spyder (2015–2016)

Description

The SOUL Competition Headers for the 981 GT4 / Boxster Spyder unlock the true potential of the 3.8 L flat‑six by replacing the restrictive stock exhaust manifolds with a high‑flow, free‑breathing stainless header system. With smooth‑radius tubing, port‑matched flanges and optimized collector design, these headers boost exhaust flow, reduce back‑pressure, and give the engine a more aggressive, race‑inspired exhaust note. On the street or track, you’ll get sharper throttle response, stronger mid‑range punch, and a more visceral exhaust tone — a major upgrade for enthusiasts seeking real performance and sound.

Fitment Notes

• Compatible with Porsche 981 Cayman GT4 and 981 Boxster Spyder models from 2015 to 2016.

• Designed as a direct bolt‑on header set — uses factory exhaust ports and mounting points; no custom fabrication or welding needed for installation.

• Because this is a “competition” (cat‑less) header setup, factory catalytic converters are removed — owners should be aware that this may affect emissions compliance and potentially trigger check‑engine codes without proper ECU tuning or O₂‑sensor management.

Included

• Left and right stainless‑steel header assemblies (primary tubes + collector section), built for the 981 GT4 / Spyder exhaust geometry.

• Port‑matched flanges and all necessary hardware for bolt‑on installation (gaskets, bolts, etc.).

• Installation instructions and quality‑checked packaging to ensure fitment upon delivery.

Product Specs

• Material: Mandrel‑bent T304L stainless steel tubing with smooth‑radius bends and precision‑machined collector / flange interfaces.

• Exhaust Runners: Sized for optimal flow on the 3.8 L flat‑six — engineered to maximize scavenging and flow efficiency.

• Expected Performance Improvement: Independent dyno testing claimed gains of approximately +20 wheel‑horsepower (whp) with competition headers alone; additional gains possible when paired with ECU tuning and further exhaust upgrades.

• Heat & Weight: Design reduces exhaust restriction — providing better thermal efficiency and a more responsive throttle/exhaust system compared to stock manifolds.

Product Features

• Enhanced Flow & Throttle Response — Free‑flowing runner design significantly reduces restrictions, allowing faster exhaust evacuation, more immediate throttle response, and improved mid‑range driveability.

• Raw & Aggressive Exhaust Tone — With minimal restriction and a straight‑through flow path, the exhaust note becomes deeper, sharper and more race‑inspired — especially under load or high RPM.

• Optimized for Track & Performance Builds — These headers are built for enthusiasts who demand maximum performance and don’t mind sacrificing catalytic emissions compliance for power and sound.

• Bolt‑On Convenience — Designed for direct swap with stock manifolds using existing mounts and ports — no fabrication required, suitable for DIY or shop install.

• Premium Construction — Made from high-grade stainless with port‑matched flanges and smooth bends to maximize flow, minimize turbulence, and ensure durability under high heat and stress.

• Strong Foundation for Further Upgrades — Works well as a base for additional exhaust modifications, ECU tuning, or full track‑oriented builds; improved flow makes downstream exhaust components more effective.

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