APR is pleased to present the ultimate Cast Downpipe Exhaust System!
Upgrading the restrictive factory downpipe with the APR Cast Downpipe Exhaust System is a great way to increase performance and add a sophisticated growl to the exhaust note. Ideal performance is achieved through expelling exhaust gases at maximum velocity through APR's proprietary, low-turbulence, investment cast downpipe. Designed and assembled in-house, the system utilizes only premium materials and world-class manufacturing techniques to deliver unmatched quality and reliability.
The APR Cast Inlet Race DP Exhaust System replaces the restrictive factory DP with a larger, 76mm stainless steel mandrel-bent system, featuring a port-matched cast inlet, high-flow catalyst and various other features. Expect better throttle response, more horsepower and an intoxicating exhaust note, while remaining civilized during normal daily driving. It’s one of the best performance upgrade for 1.8T and 2.0T engines following APR’s ECU Upgrades and it’s designed and assembled in-house, using premium materials and world-class manufacturing techniques few can match.
The factory downpipe system consists of smaller, 63" piping with varying bends and multiple restrictive high-cell-count catalysts, all of which contribute to a less than ideal flow path and hindered performance. APR's engineers took a multi-step approach to maximizing flow, reducing under hood temperature, and eliminating unnecessary restrictions all in a unique package only APR can deliver.
The APR Race DP features an investment-cast inlet, with a port matched v-band flange, creating an ideal flow path for exhaust gasses exiting the turbocharger. By matching the already oversized turbo outlet, the Race DP is able to maintain exhaust gas velocity, improving performance with minimal variances in cross-sectional area due to the strategic use of cast parts. Furthermore, the cast inlet allows for excellent packaging, satisfying other design criteria while maintaining a larger and constant cross-sectional area compared to mandrel bent tubing built to similar specifications. The end results it simple: Smooth exhaust flow and maximum performance!
The APR midpipe use an OEM-style flex section that is fully sealed with a corrugated inner lining to improve flow and reliability. The low profile design and minimal use of bradding material eliminates clearance issues common with other designs that can billow, rub, rattle and fray over time. The flex section is constructed from T304 stainless steel and is argon back-purged when TIG welded to the Race DP.
Attached to the Race DP is a high quality mounting bracket. The bracket is constructed from T304 stainless steel and is CNC-machined and CNC-bent to exact tolerances. The bracket is TIG welded to the piping and argon back-purged.
Designed to stand the test of time, the adjustable bracket is CNC machined from 8mm-thick billet T304 stainless steel and the hanger feet are threaded into place, eliminating the need for welds. Weight is removed from the bracket, wherever possible, while not hindering its structural integrity. The bracket attaches to the Race DP’s integrated mounting bracket with the included hardware.
Our system uses OEM-style low-profile slip clamps designed to eliminate the need for flanges, swedging, or slip fittings. By using this low profile design, the exhaust system can be positioned higher in the exhaust tunnel and away from the ground with better clearances compared to flanged setups. Each clamp allows for less turbulence and greater accuracy at the connection points as the pipes simply butt up to one another rather than the ambiguity and voids associated with swedged slip fittings. Furthermore, the clamp doesn’t rely on deforming the pipe to provide a tight seal, making install and removal more convenient.
APR’s Engineers paid special attention to the details when designing the APR Cast Inlet Race DP Exhaust System all the way down to the oxygen sensor bung. APR’s O2 bung is investment cast from T304 stainless steel and is curved to perfectly fit on the catalyst, without protruding into the pipe, as this would further impede airflow beyond the sensor itself. The bung is TIG welded to the piping and argon back-purging is used to ensure the interior surface is smooth and clean.
APR’s engineers specified a high-quality and high-flow GESI metal 300-cell catalyst ideal for forced induction application. During dyno testing, the 100mm x 100mm design showed no measurable loss in power thanks to the catalyst’s design. Internally the catalytic converter feature a proprietary wash coat that helps to reduce emissions and smell common on cat-less setups. The low-profile catalyst features a fully captured substrate brick, which is furnace brazed to the outer mantle and physically captured by the diffuser cones preventing rattling, rotation, and damage to the substrate. Subsequently, a byproduct of running the catalyst is a reduction in noise, making the system as a whole more pleasing to the ear.
A simple and removable, T304 stainless steel reducer, featuring a smooth transition, is included, making the APR Cast Inlet Race DP Exhaust System directly compatible with the OEM catback exhaust system.
Included with each system is an OEM gasket, designed to mate between the downpipe and the turbocharger.
This product fits the following vehicle configurations:
|Audi||A3||1.8T & 2.0T||FWD & E-Differential||6MT & S-Tronic|
|Seat||Cupra||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Seat||Cupra R||MK3||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Seat||Seat Leon||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Skoda||Octavia||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Skoda||VRS||MK3||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Volkswagen||Golf||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Volkswagen||GTI||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Volkswagen||GTI Clubsport||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Volkswagen||Passat||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
|Volkswagen||PP||1.8T & 2.0T||FWD & E-Differential||6MT & DSG|
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