Bull-X Decat Downpipe For Audi RS3 8V 8V.1 Pre-Facelift 367hp 2015-2017

The Pre Cat Eliminator from HG-Motorsport can be 100% replaced with the standard part. Perfect fit and high-quality materials make this article a top product from our range. By optimizing the diameter, pipe routing and/or catalytic converter, the turbocharger can be greatly relieved.

Of course, the complicated design has a technical background and also its advantages, such as .B lower exhaust back pressure and thus less heat accumulation in the turbocharger. That's why, in contrast to other manufacturers, we have distanced ourselves from a simple design with a narrow pipe bend directly after the turbocharger output. This narrow pipe bend has shown in our flow analyses that this design creates a higher back pressure despite the lack of a catalyst than our design. Only in the casting process has it been possible to ensure the absolute maximum flow and to maintain no disturbing transitions in the inner course of the downpipe.

A lower dynamic pressure and the thermal relief generate a significant increase in torque, power and earlier response and at the same time with an extension of the durability.

Technical details
- CAD designed casting sheet, which was developed with 3D flow analyses
-flange input 112mm, cast sheet 101mm, becomes 2-flow to 2x 63.5mm
- made of stainless steel
- Plug ?n ?Play solution
- perfect fit, can be easily exchanged for the original component
- high-quality materials
- Made in Germany – real quality from our own production
- flow-optimized and performance-enhancing
- improvement of durability and responsiveness
- optimal removal of exhaust gases
- without disturbing edges at the transitions
- designed and tested
on the PC and dynamometer- No more heat accumulation on the loader and thus less thermal Load on the turbo.
- Better responsiveness and measurable slight increase in performance.

The Pre Cat Eliminator from HG-Motorsport can be 100% replaced with the standard part. Perfect fit and high-quality materials make this article a top product from our range. By optimizing the diameter, pipe routing and/or catalytic converter, the turbocharger can be greatly relieved.

Of course, the complicated design has a technical background and also its advantages, such as .B lower exhaust back pressure and thus less heat accumulation in the turbocharger. That's why, in contrast to other manufacturers, we have distanced ourselves from a simple design with a narrow pipe bend directly after the turbocharger output. This narrow pipe bend has shown in our flow analyses that this design creates a higher back pressure despite the lack of a catalyst than our design. Only in the casting process has it been possible to ensure the absolute maximum flow and to maintain no disturbing transitions in the inner course of the downpipe.

A lower dynamic pressure and the thermal relief generate a significant increase in torque, power and earlier response and at the same time with an extension of the durability.

Technical details
- CAD designed casting sheet, which was developed with 3D flow analyses
-flange input 112mm, cast sheet 101mm, becomes 2-flow to 2x 63.5mm
- made of stainless steel
- Plug ?n ?Play solution
- perfect fit, can be easily exchanged for the original component
- high-quality materials
- Made in Germany – real quality from our own production
- flow-optimized and performance-enhancing
- improvement of durability and responsiveness
- optimal removal of exhaust gases
- without disturbing edges at the transitions
- designed and tested
on the PC and dynamometer- No more heat accumulation on the loader and thus less thermal Load on the turbo.
- Better responsiveness and measurable slight increase in performance.

The Pre Cat Eliminator from HG-Motorsport can be 100% replaced with the standard part. Perfect fit and high-quality materials make this article a top product from our range. By optimizing the diameter, pipe routing and/or catalytic converter, the turbocharger can be greatly relieved.

Of course, the complicated design has a technical background and also its advantages, such as .B lower exhaust back pressure and thus less heat accumulation in the turbocharger. That's why, in contrast to other manufacturers, we have distanced ourselves from a simple design with a narrow pipe bend directly after the turbocharger output. This narrow pipe bend has shown in our flow analyses that this design creates a higher back pressure despite the lack of a catalyst than our design. Only in the casting process has it been possible to ensure the absolute maximum flow and to maintain no disturbing transitions in the inner course of the downpipe.

A lower dynamic pressure and the thermal relief generate a significant increase in torque, power and earlier response and at the same time with an extension of the durability.

Technical details
- CAD designed casting sheet, which was developed with 3D flow analyses
-flange input 112mm, cast sheet 101mm, becomes 2-flow to 2x 63.5mm
- made of stainless steel
- Plug ?n ?Play solution
- perfect fit, can be easily exchanged for the original component
- high-quality materials
- Made in Germany – real quality from our own production
- flow-optimized and performance-enhancing
- improvement of durability and responsiveness
- optimal removal of exhaust gases
- without disturbing edges at the transitions
- designed and tested
on the PC and dynamometer- No more heat accumulation on the loader and thus less thermal Load on the turbo.
- Better responsiveness and measurable slight increase in performance.