Catless downpipe for Audi A6-RS6 C8, A7 Sportback-RS7 — TA Technix
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Catalyst-free downpipe for Audi A6-RS6 C8, A7 Sportback-RS7
Specifications
Technical details
- Catalyst-free
- 1 professional-side lambda sensor port with gasket set
What this part changes
The downpipe is the tube that descends from the turbocharger. This is where back pressure builds up: the turbine has to push the exhaust gases through a narrowed section and often a catalytic converter. Widening it frees up the turbine, allowing it to build boost earlier and more decisively - this is the exhaust modification you feel most on a turbocharged engine.
What changes behind the wheel: response. The turbo takes less time to spool up, and the power keeps building higher in the rev range. On a remapped engine, this is the part that allows the ECU to deliver what it promises; without remapping, the ECU compensates and much of the potential gain remains unused.
What to plan for
- ECU remapping: essential to take advantage of the gain and prevent limp mode.
- Without a catalytic converter, the car is no longer road legal, and the engine warning light will come on if no electronic adjustment is made.
- Check the sensor port: single or dual depending on the engine; this is specified in the product's technical details.
- Removal often requires access from underneath and removal of an engine mount: plan to use a lift or axle stands.
Compatible vehicles
| Make | Model | Engine | Years |
|---|---|---|---|
| Audi | A6 Avant - type C8-4A | RS6 Mild Hybrid Quattro - 600 hp | — |
| Audi | A7 Sportback type 4KA | RS7 Mild Hybrid Quattro - 600 hp | — |
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