HJS 200 Cell Downpipe – Seat Leon ST Cupra 4Drive 2.0 TSI
Upgrade your exhaust system with the HJS high-performance downpipe, designed for MQB EA888 Gen 3 2.0 TSI engines, including the Seat Leon ST Cupra 4Drive.
Featuring a 200-cell high-flow metal catalytic converter and full ECE approval, this downpipe delivers increased power, improved turbo response and a deeper exhaust note — while remaining fully road legal.
Key Features
- 200-cell HJS high-flow catalytic converter
- Full ECE / TÜV approval (road legal)
- 76 mm (3") stainless steel downpipe
- Plug & play installation
- Direct fit to OEM exhaust system
- Includes adapter (70 mm to 55 mm)
Performance Benefits
The HJS downpipe significantly improves exhaust flow and engine efficiency:
- Up to +10 kW (14 HP) power gain
- Up to 40% lower exhaust back pressure
- Faster turbo spool and improved response
- Lower exhaust gas temperatures
- Reduced thermal load on turbocharger
Ideal for:
- Stage 1 / Stage 2 builds
- Daily-driven performance cars
- Street-legal tuning setups
- Turbocharged MQB platforms
Technical Specifications
- Product number: 21TSI116
- Material: Stainless steel
- Catalyst: 200 cell HJS metal catalyst
- Inlet diameter: 86 mm
- Outlet diameter: 70 mm
- Adapter: 70 mm to 55 mm included
- Certification: ECE / TÜV approved
- OBD compatibility: EOBD tested
Additional Features
- High-performance flex section (gas-tight)
- Thermal insulation for reduced heat transfer
- Optimized exhaust gas flow
- Improved turbo efficiency and durability
Fitment
Primary Application
- Seat Leon ST Cupra 2.0 TSI 4Drive (MQB)
- EA888 Gen 3 engine
Also compatible with:
- VW Golf 7 GTI / R
- VW Polo GTI 2.0 TSI
- Audi S3 8V
- Seat Ibiza Cupra 2.0 TSI
- Other MQB EA888 Gen 3 vehicles
Important Notes
- Fully road legal (ECE approved) – no registration required
- Suitable for performance tuning setups
- Professional installation recommended
Why Choose HJS?
HJS is a leading manufacturer of ECE-approved high-performance exhaust systems, combining performance gains with legal compliance.
- German engineering
- High-quality metal catalysts
- Proven performance gains
- Road legal solutions
Why Buy from Torque Lab?
Torque Lab supplies performance exhaust and tuning parts across Europe.
- Genuine HJS products
- Expert support for MQB builds
- Fast EU delivery
- Proven tuning solutions
Torque Lab supports platforms including VW, Audi, Seat, Skoda, BMW and Honda, with a strong focus on performance and street-legal upgrades.
