Description
High Flow Engineering B58 Decat Downpipe Non-OPF Performance Upgrade
Unleash the true performance of your Toyota Supra A90 / A91 B58 Non-OPF with the HFE Heat-Shielded Decat Downpipe. Designed to replace the restrictive factory catalytic converter section, this high-flow decat significantly reduces exhaust backpressure, enhances turbo response, and supports increased power output on tuned vehicles – making it a core upgrade for serious B58 builds.
⚠ IMPORTANT – EMISSIONS & ROAD USE NOTICE
This product removes the factory catalytic converter and is intended for off-road, motorsport or track use only. It is not UK road legal and will likely result in an MOT emissions failure. ECU tuning is required after installation.
Key Features＋
- High-Flow Decat Design: Eliminates the restrictive OEM catalytic section.
- Integrated Heat Shielding: Reduces surrounding engine bay temperatures.
- Improved Turbo Efficiency: Faster spool and sharper throttle response.
- Performance 304 Stainless Steel Construction: Built to withstand extreme exhaust temperatures.
- Mandrel-Bent Tubing: Smooth internal flow for reduced turbulence.
- Direct-Fit Installation: Designed for Non-OPF B58 Supra models.
Why Upgrade Your A90/A91 Downpipe?＋
- The factory catalytic converter is a significant restriction on tuned B58 engines.
- Reduced backpressure improves overall engine efficiency.
- Essential supporting modification for Stage 2 tuning.
- Enhances exhaust tone and turbo sound characteristics.
- Improves power delivery under high load.
Technical Specifications＋
- Engine: BMW B58 3.0L Turbo
- Vehicle: Toyota Supra A90 / A91
- Configuration: Decat (no catalytic converter)
- Shielding: Integrated heat shielding
- Material: High-grade stainless steel
- Fitment: Non-OPF models only
Vehicle Compatibility＋
- Toyota Supra A90 (2019–2020 Non-OPF)
- Toyota Supra A91 (Non-OPF models)
✔ B58 engine only
✔ Non-OPF / non-GPF vehicles only
✔ Always confirm model specification before ordering
✔ ECU tuning required
Installation＋
- Remove the factory catalytic downpipe assembly.
- Install HFE decat downpipe using OEM mounting points.
- Ensure correct alignment and secure all connections.
- ECU remap required prior to driving.
- Professional installation strongly recommended.
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