Phoenyx Design Race Headers 200-Cell Euro 6 High-Flow Catalytic Converters No Tune (20132016 Porsche 991.1 GT3)
High-Flow Catted Race Headers for Porsche 991.1 GT3
The Phoenyx Design Race Headers with 200-Cell Euro 6 High-Flow Catalytic Converters are engineered to deliver a major performance upgrade for the 20132016 Porsche 991.1 GT3 while retaining catalytic converters for improved exhaust efficiency versus fully catless systems. These headers dramatically reduce exhaust restriction compared to the factory units, improving exhaust scavenging, throttle response, and overall power delivery throughout the RPM range.
Constructed from 100% high-quality T304 stainless steel, these race headers are built to withstand extreme exhaust temperatures and aggressive track use. Precision TIG welding ensures long-term durability and leak-free operation, while the heat-stamped integrated heat shielding helps control under-hood temperatures during spirited driving and extended track sessions.
The integrated 200-cell Euro 6 high-flow catalytic converters provide significantly improved flow over OEM catalysts while maintaining a smoother exhaust tone and reduced exhaust restriction compared to stock. This system installs as a direct bolt-on replacement, includes all necessary mounting hardware, and is 100% reversible, allowing the vehicle to be returned to stock if desired. No tuning is included.
Performance Highlights
- 200-cell Euro 6 high-flow catalytic converters for improved exhaust flow
- Increased horsepower and torque versus factory headers
- Improved throttle response and high-RPM efficiency
- 100% T304 stainless steel construction
- Precision TIG-welded for strength and longevity
- 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: 200-cell Euro 6 high-flow catalytic converters
- Tuning: Not included
- Installation: Direct bolt-on, fully reversible
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
Are these headers street legal?
No. Although these headers use high-flow catalytic converters, they are not CARB or EPA certified and are intended for racing, track, or off-road use only.
Will these headers trigger a check engine light?
Check engine lights may still occur depending on vehicle configuration and monitoring thresholds. Racing software may be required for optimal operation.
Why Buy from Beefcake Racing?
Beefcake Racing specializes in Porsche GT-platform performance upgrades and offers expert support from enthusiasts who understand high-end track builds. If you have questions about exhaust systems, tuning, or fitment for your 991.1 GT3, contact sales@beefcakeracing.com or call 1-855-827-7223.
Emissions & Legal Disclaimer
Emissions Non-Compliance: This product modifies or replaces factory emissions equipment and is sold strictly 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

