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 gasses at maximum velocity through APR’s proprietary, low-turbulence, investment cast downpipe. Designed and assembled in-house, the system utilises only premium materials and world-class manufacturing techniques to deliver unmatched quality and reliability.
- Designed and assembled in-house.
- T304L stainless steel construction.
- Argon back-purged TIG welding.
- Investment cast downpipe.
- 80mm inlet with integrated o2 bung and flange.
- Low profile, sealed/corrugated flex section.
- 76mm outlet with integrated bracket.
- 8mm billet bracket.
- 76mm brushed and de-burred piping.
- Non-swedged/slip-fit/flanged piping.
- Investment cast o2 bungs with billet plugs.
- 300 cell, 100mm x 100mm GESI catalyst.
- OEM-style slip-on clamps.
- Reducer for OEM catback compatibility.
- OEM gasket.
- APR Stage II ECU Upgrade price waived.
- Limited lifetime warranty.
The factory downpipe system consists of smaller, 63mm 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 maximising flow, reducing under hood temperature, and eliminating unnecessary restrictions all in a unique package only APR can deliver.
Cast Downpipe Inlet and Outlet
The exhaust system features a strong, investment cast, T304L inlet and outlet designed to maximise flow and minimise turbulence. By casting the inlet, APR’s engineers were able to create a smooth and high-flow exhaust path that maximised flow through swept blends and shapes that are otherwise not possible through conventional fabrication techniques. The inlet perfectly matches the factory turbocharger’s 80mm outlet and gradually necks down over a long distance to further enhance performance. The mounting flange, oxygen sensor bung and bracket are integrated into the casting, and TIG welding at the flex section ensures a clean inner surface eliminating turbulence, vortices and eddies to the highest degree.
With a nominal wall thickness of 2.55mm the downpipe is strong and produces a refined exhaust note compared to thin wall tubing systems. The cast sections undergo a tumbling process to smooth and de-burr any imperfections inside the pipe, while simultaneously enhancing the exterior finish. Lastly, all necessary surfaces are CNC machined for an accurate fit.
The APR Difference
Stage II ECU Upgrade Information
For the best results, APR recommends installing the Stage II ECU Upgrade. This upgrade requires purchase of an APR Stage I ECU Upgrade, and is included for free to the original owner and original vehicle with the purchase of an APR Cast Downpipe Exhaust System!
Stage II ECU Upgrade Pricing
|Engine||Retail Price||Price with Purchase of the APR Cast Downpipe Exhaust System|
|- Stage II software may not be available for all vehicles.|
|- Please note vehicle manufacturers issue many ECU part numbers and revisions throughout their vehicle lineup. As such, some ECUs may be temporarily unavailable as new parts and/or revisions are released. If the vehicle's ECU part number and revision is known, availability can be checked at any APR Dealer.|
|- Stage II pricing only applies to customers who have purchased an APR ECU Upgrade after February 16th, 2015.|
|1.8T EA888 Gen 1 - Front Wheel Drive||£99.00||Free!|
|2.0T EA113 (K03) - Front Wheel Drive||£99.00||Free!|
|2.0T EA113 (K04) - Front Wheel Drive||£99.00||Free!|
|2.0T EA888 Gen 1 - Front Wheel Drive||£99.00||Free!|