Custom Downpipe Kit for Audi S5 B8,5 with the 3.0 TFSI engine.

This downpipe comes only as the DE-CAT version.

This downpipe is made using CNC technology and is fully made ut of Acid-Resistant Steel. The Catalytic Converter (CAT) is either completely removed or a high-flow one is fitted in its place, which helps with reducing back pressure. This directly improves the turbo spool time, increases power, and provides a more aggressive exhaust note.  Both the diameter and the size of the downpipe have been specially designed to remove exhaust gases as fast as possible while providing the best performance. The DE-CAT version may be illegal for road use in your country/state. Please check the rules beforehand. The DP is manufactured in a way that provides the best flow with the least variances in its cross-section. It connects the turbocharger with the rest of the exhaust system and sometimes is vital for ensuring that your turbo potential doesn’t go to waste. It is a great option to pair with a hybrid turbo.

MOST IMPORTANT FEATURES

1. The downpipe parts are CNC produced, ensuring precise, high-quality elements.
2. The 2,5-inch (63,5 mm) pipe diameter.
3. It is made fully out of Acid-Resistant Steel to ensure long life despite being exposed to toxic exhaust gases.
4. The shape and mounting points fit with the original car parts, no additional work is needed!
5. There are 2 sockets for lambda sensors on the assembly.
6. Clean, strong, and attractive welds, inside and out!
7. 100% Plug and Play
8. Limited 2 years warranty
9. ECU tune is necessary to avoid the Check Engine Light.
10. This DP is handmade and quality checked throughout the whole production process.

PERFORMANCE ADVANTAGES

1. Lowers exhaust temperature, so the charger and the exhaust manifold are more protected.
2. The highest levels of performance and greater reliability under constant high load conditions.
3. Allows for smooth flow of the exhaust gases, giving your engine extra power, as well as sharper throttle response!
4. Lighter than OEM.

COMPATIBLE CAR MODELS

Audi S5 B8,5 3.0TSI – 333HP

CATALYST INFORMATION

For downpipes without catalytic converter or with 100/200-cell catalytic converter, if the second post-catalytic lambda sensor exists, the control unit may display an error message. This does not rectrict driving operation, because first lambda sensor is present for the motor control. The second lambda sensor is only used to monitor the catalyst’s effectiveness, and this check can be programmed out through modifying the chip’s software.
Most of the cars up to Euro 3 Emissioncode do not have post-cat sensors, therefore require no adjustments to avoid the alarm.
In case of catalytic converters, the washcoat content is significantly increased and has a very high oxygen storage capacity. This means, that errors can be avoided. While the EOBD Catalysts are tested up to Euro 4, their durability and use up to Euro 6 is given.
In case of Euro 5 and 6 vehicles, a catalyst with ECE selection is needed, to avoid the above points.
MuchBoost sportcats run a 100 or 200-cell high flow cat which passes road legal emissions tests, while de-cat pipes are for RACE USE ONLY and are NOT road legal.

DELIVERY

We need usually ~ 14 working days to perform and send this KIT.