Designed with sophisticated CAD modelling tools to ensure high flow and a perfect fit.
With a range of diameters from 3 to 5.5 inches depending on the application, are replacing the OEM downpipes, Laser-cut brackets to fit onto the OEM-provided mounting points.
Completely assembled and TIG-welded with love by experienced hands.
The Perfect Catalytic Converter/Particulate Filter Bypass System to Unleash Performance.
Key Features of Toyota Supra Mk5 B58 Catless Downpipe:
Built to complement the legendary B58 platform, BlackBoost Catless Downpipes combine advanced fabrication, increased exhaust efficiency, and dependable performance for enthusiasts seeking a Toyota Supra Mk5 Downpipe Australia upgrade.
Key features include:
- Beautiful Racing Exhaust note
- Huge exhaust flow improvement
- Completely Bypass Primary and secondary Catalytic? Converters DPF & OPF*
- High Power/Torque Gains depending on mods
- Support power level proven over 1000 WHP
- Reduces back pressure on Turbo applications
- Built entirely in low carbon 304 Stainless Steel
- Mandrel-bent with laser-cut components
- Handmade Tig welded in House
- Bolt-on Plug and Play installation
- Compatible With BlackBoost and other Turbo Upgrades
Not Street Legal. For race use only. Requires a tune.
Frequently Asked Questions
Will a Toyota Supra Mk5 B58 Downpipe improve performance on a stock turbo setup?
Yes. The B58 engine responds well to reduced exhaust restriction. A high-flow catless downpipe improves exhaust gas flow, reduces turbo back pressure, and helps the turbocharger operate more efficiently. Even on a stock turbo setup, many owners experience sharper throttle response, improved turbo behaviour, and a more engaging driving experience.
Why do Supra Mk5 owners choose a catless downpipe instead of upgrading the entire exhaust system?
The downpipe is one of the most restrictive sections of a turbocharged exhaust system. Upgrading this component improves airflow closer to the turbocharger, helping unlock performance potential while enhancing the B58’s exhaust character without requiring a complete exhaust replacement.
Does a Toyota Supra Mk5 B58 Downpipe require an ECU tune?
A tune is highly recommended after installing a catless downpipe. The increased exhaust flow changes turbo and engine behaviour, while proper ECU calibration helps optimise boost control, airflow management, and overall performance.
What is the advantage of choosing a thermally insulated Supra Mk5 Downpipe?
A thermally insulated downpipe helps retain exhaust heat within the system while reducing radiant heat transfer into the engine bay. This helps manage under-bonnet temperatures, protect surrounding components, and maintain consistent performance during repeated high-load driving.
Can a Toyota Supra Mk5 B58 Catless Downpipe support high-power builds?
Yes. A properly engineered B58 downpipe is designed for demanding performance applications, including upgraded turbo setups and aggressive tuning. BlackBoost Supra Mk5 Downpipes feature 304 stainless steel construction, TIG welding, and proven support for high-power builds exceeding 1000 WHP.