Y-pipe downpipe 2.7L Bi-turbo for Audi S4 RS4 76mm > 63,5mm stainless steel with flexpipe

Scope of delivery:
- Stainless steel downpipe 76>63.5mm with flex pipe for Audi S4 RS4 B5 2.7 Biturbo*

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Description:
The stainless steel ø 63.5mm downpipe significantly reduces back pressure, relieving the turbos, which in turn provides more power and lower exhaust temperatures. The post-cat sensor may possibly need to be programmed out. The downpipe is made of stainless steel. The flange surfaces are machined. There are two lambda sensor connections M18x1.5mm welded in. The downpipe starts at the turbo ø 76mm and tapers to 63.5mm, with integrated flex pipes. The connecting pipes to the exhaust are like the original. The downpipe sits between the turbocharger and the exhaust. Two 200-cell cats are recommended. Power output up to max. 500hp is possible, but of course other components such as intake, exhaust system, injectors, manifold, intercooler, turbocharger must also be installed and the software adapted accordingly. The downpipe is simply replaced 1:1 with the original.

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compatible with:
- Audi S4 B5 2.7L Bi-Turbo
- Audi RS4 B5 2.7L Bi-Turbo (the two pipes to the exhaust must be adjusted in length)

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Optional:
- Sport cat / racing cat 200 cell ø 102mm - L 250mm stainless steel metal cat with E-mark R103 up to Euro 4 & lambda sensor connection 340123

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Registration:
For individual approval according to §21 StVZO, please consult your TÜV inspector.

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Please note that installation of this item constitutes a modification that renders the vehicle’s operating permit under StVZO void. Not permitted for use on public roads.