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4" 101.6mm RACE downpipe 100/400 Zeller Kats - Audi RS3, TTRS, RSQ3 - OPF models - DNW
4" 101.6mm RACE downpipe 100/400 Zeller Kats - Audi RS3, TTRS, RSQ3 - OPF models - DNW
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- Catalytic converters in combination with 100 or 400 cell cat modules under the vehicle
- Up to 30% less exhaust back pressure than comparable 3.5 inch downpipes
- Designed for up to 850 hp
- 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 OPF 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 with 100 or 400 cell catalytic converters
- 2 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.
The downpipe is an exchange for the standard downpipe. On average, the exhaust back pressure of the 4-inch OPF downpipe is another 119 millibars (mbar) below the level of a 3.5-inch variant. The exhaust gas temperature under continuous load with the 4-inch version is on average 15 °C below the 3.5-inch version.
Any modification to catalytic converters (replacement, change of cells or size - different from original condition) requires a software adjustment of the engine control unit or the use of our OPF / Lambda Simulator (not included). This prevents errors from occurring.
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