Phoenyx Design Race Headers No Catalytic Converters Tune Included (20132016 Porsche 991.1 GT3)
Catless Race Headers with Included ECU Tune for 991.1 GT3
The Phoenyx Design Race Headers No Catalytic Converters with Tune Included are built for Porsche owners who want maximum performance from their 20132016 Porsche 991.1 GT3. By completely removing the restrictive factory catalytic converters, these race headers dramatically improve exhaust flow, throttle response, and high-RPM efficiencyexactly where the GT3s naturally aspirated flat-six thrives.
Fabricated from 100% high-quality T304 stainless steel, these headers are designed to handle extreme heat and sustained track abuse. Precision TIG welding ensures strength, consistency, and long-term reliability, while the heat-stamped integrated heat shielding helps manage under-engine temperatures during aggressive driving.
This package includes a GT3-specific performance tune calibrated to fully take advantage of the catless exhaust configuration. The tune optimizes fueling, ignition timing, and throttle mapping to safely unlock additional power and torque. Tuning instructions are delivered electronically after purchase. The system installs as a direct bolt-on, includes all required mounting hardware, and is 100% reversible if you ever need to return the car to stock.
Performance Highlights
- Fully catless race header design for maximum exhaust flow
- Noticeable gains in horsepower, torque, and throttle response
- Included GT3-specific performance tune
- 100% T304 stainless steel construction
- Precision TIG-welded for durability and strength
- Heat-stamped integrated heat shielding
- Direct bolt-on installation with included hardware
- 100% reversible design
Quick Specs
- Application: Porsche 991.1 GT3
- Model Years: 2013 2014 2015 2016
- Material: T304 stainless steel
- Catalytic Converters: None (catless)
- Tuning: Included (GT3 only)
- Installation: Direct bolt-on, fully reversible
Included Tune Specs (GT3 Only)
- Peak Horsepower: 526 HP
- Peak Torque: 363 lb-ft
- Gains: +23 HP / +16 lb-ft
- Tuning instructions emailed after purchase
Fitment
- 2013 Porsche 911 GT3 (991.1)
- 2014 Porsche 911 GT3 (991.1)
- 2015 Porsche 911 GT3 (991.1)
- 2016 Porsche 911 GT3 (991.1)
Frequently Asked Questions
Is this system street legal?
No. These headers remove the factory catalytic converters and are intended strictly for racing, track, or off-road use.
Will the included tune prevent check engine lights?
The included tune is designed to work with the catless configuration and helps address fault codes related to catalyst removal, but results may vary depending on vehicle configuration.
Why Buy from Beefcake Racing?
Beefcake Racing specializes in high-performance Porsche upgrades and offers knowledgeable support from true enthusiasts. If you need help selecting the right exhaust or tuning setup for your 991.1 GT3, contact sales@beefcakeracing.com or call 1-855-827-7223.
Emissions & Legal Disclaimer
Emissions Non-Compliance: This product removes factory emissions equipment and is sold for racing, competition, track, or off-road use only. It is not CARB or EPA certified and is not legal for use on public roads. All installation and use risk is assumed by the end user and installer.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
