Give your Audi RS4 B9 or RS5 B9 (F5) 2.9 TFSI biturbo a serious performance upgrade with these Endura Motorsport decat downpipes. These downpipes replace the original catalytic converters directly and are manufactured from high-quality T304 stainless steel with hand-welded TIG joints. Thanks to the large 114.3 mm (4.5") diameter at the turbo, tapering down to 76 mm (3"), exhaust gas flow is significantly improved, delivering more power, faster turbo response and a more aggressive exhaust note.
On a Stage 1 setup, an average power gain of approximately 34 pk is achieved. The downpipes fit directly onto the original mounting points and require no modifications during installation.
Benefits
• direct fit – 100% OEM fit without modifications•
Increased power and torque thanks to greatly improved flow•
Average gain of +34 pk on a Stage 1 setup•
Faster turbo
response• More aggressive and deeper exhaust
note• Entirely manufactured from T304 stainless steel•
Hand-welded TIG joints for maximum durability•
Large 114.3 mm (4.5") design from the turbo, tapering to 76 mm (3")
• Includes fitting
hardware• Lifetime warranty against manufacturing defects
Contents
• Left-hand decat
Downpipe• Right-hand decat
Downpipe• fitting kit
Compatibility
Audi RS4 B9 2.9 TFSI Biturbo (Non-OPF)
Audi RS5 B9 / F5 2.9 TFSI Biturbo (Non-OPF)
Important
• Suitable only for vehicles without an OPF (Otto particulate filter).
• Software tuning is recommended or required after fitting to prevent fault codes and achieve optimum performance.
• Not road-legal in countries/regions with emission or MOT requirements. For Motorsport and off-road use only, where permitted.
• This version does not contain catalytic converters (decat version).
Frequently Asked Questions
Does this set fit an OPF version?
No. These downpipes are only suitable for non-OPF models. Please check in advance whether your vehicle is factory-fitted with an OPF system.
How much extra power does this upgrade deliver?
On a Stage 1 setup, an average of around 34 pk extra is achieved. The exact result depends on the software and other modifications.
Do I need an ECU tune?
Yes. A software tune is strongly recommended to prevent fault codes and to get the maximum power out of the modification.
Do these downpipes replace the original catalytic converters?
Yes. These downpipes completely replace the original catalytic converters to maximise exhaust flow.
What is the benefit of the larger diameter?
The 114.3 mm (4.5") design immediately behind the turbo significantly reduces back pressure, allowing the turbos to operate more efficiently and Spool up faster.
