4" 101.6mm TÜV downpipe for RS3 8V FL & TTRS 8S - DAZA
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- Reduces the peak exhaust gas temperature by up to 150°C after the turbocharger compared to the original downpipe
- Up to 30% less exhaust back pressure than comparable 3.5 inch downpipes
- Designed for up to 750PS
- Continuous 4 inch 101.6mm to 2 x 3 inch 76mm
- Manufactured in 1.4301 stainless steel
- 1:1 interchangeable with standard downpipe
- Suitable for all 2.5 TFSI 400PS models
- 1 x 4 inch / 101.6mm exhaust tailpipe / Y-pipe / downpipe
- 1 x stainless steel laser-sintered Y-piece for adaptation with V-band
- 2 x catalytic converters 400 cells for TÜV registration (only in conjunction with software)
- 1 x V-band ring / clamp
- 6 x M8 screw and copper nut
- 2 x gasket for triangular flanges
Product description:
The HPerformance 4 inch 101.6mm downpipe comes directly from the development of our 1/4 mile vehicle into series production. It is the first downpipe in the world to be built in this pipe diameter throughout. It starts at the turbo outlet and replaces the standard pre-catalytic converter. Our TÜV downpipe comes with 2 x 400 cell catalytic converters, which can be used far beyond the TÜV-approved range (600 hp).
There is also a choice of 200 and 100 cells, both of which are only suitable for motorsport. Compared to 200-cell catalytic converters, there are no measurable or audible differences up to 750 hp, but 400 cells clean much better and last longer over the years.
The pipe diameter reduces the exhaust back pressure by up to 30% (depending on the boost pressure, the turbocharger and other peripherals) and thereby massively reduces the tendency of the engine to "knock" on cylinders 2 and 3 - which begins at the latest at 700hp on 102 octane and 820hp on E85. During our turbocharger development we were able to determine several times that the difference between 3.5 inches (88.9mm) and 4 inches (101.6mm) resulted in up to 20hp and 25NM, as well as a reduction in the exhaust back pressure by up to 0.15 bar, even with a downpipe directly on the floor of the vehicle.
These advantages are now also available for the road, as the downpipe has been made ready for series production.
Any change to catalytic converters (replacement, change of cells or size - different from the original state) requires a software adaptation of the engine control unit. With our remote flash solution, we also offer suitable tuning for the DNW 2.5 TFSI.
Important: Our so-called TÜV catalytic converter / TÜV downpipe is supplied without TÜV documentation. In combination with our software and hardware, it fulfills the requirements for TÜV registration and can be registered at our premises or at one of our authorized dealers. The downpipe is not legal without this registration.
Current estimated delivery time: 4-5 working days
Please note: In accordance with our General Terms and Conditions, we would like to expressly point out once again that all articles that are not expressly marked with a TÜV / EC approval do not have approval in the area of the StVo. These articles must therefore be type-approved by the user before they can be used on public roads. Otherwise, these products may be used in racing. This article is not permitted in the area of the StVZO and leads to the loss of the operating license and insurance cover. This modification is only for motorsport and competition purposes at closed events.
- Discoloration occurs on the silencers, pipe and tailpipe of all exhaust system components during operation. These are material-related changes that are not covered by the warranty/guarantee of the item and have no negative effect on the use or technical properties of the item.
