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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, turbulence-free, 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.

 

Quick facts:

  • Designed and assembled in-house in the USA.
  • T304L stainless steel construction.
  • Argon back-purged TIG welding.
  • Investment cast downpipe.
  • 77mm inlet with integrated 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.
  • APR Stage II ECU Upgrade price waived.
  • Limited lifetime warranty.

 

The exhaust system features a strong, investment cast, T304L inlet and outlet designed to maximized flow and minimize turbulence. By casting the inlet, APR’s engineers were able to create a smooth and high-flow exhaust path that maximized flow through swept blends and shapes that are otherwise not possible through conventional fabrication techniques. The inlet perfectly matches the factory turbocharger’s 77mm outlet and gradually necks down over a long distance to further enhance performance. The mounting flange 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 Downpipe Exhaust System features premium grade T304L stainless steel for its excellent appearance, strength and corrosion resistance properties. The pipe is rolled to the 76mm European standard diameter with a 1.5mm wall thickness and a seemingly non-existent weld seam. Pipe is cut to length in-house via APR's CNC-controlled bandsaw to an accuracy of .25mm, ensuring a precise fit. Each pipe is de-burred, and the exterior finish is brushed to give the exhaust piping a clean and attractive appearance worthy of the APR name. APR’s fabrication team uses argon back-purging during the welding process, leaving a clean and smooth interior surface, and TIG welding for strength and appearance. Lastly, no swedging or slip-fitting is necessary due to APR’s OEM-style clamp design, leaving smooth and less turbulent connection points.

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 specifications. They also paid special attention to the details when designing the APR Cast Downpipe Exhaust System all the way down to the oxygen sensor bungs. APR’s O2 bungs are investment cast from T304L stainless steel and are curved to perfectly fit on 76mm piping. Even the bracket is CNC machined from 8mm-thick billet T304L stainless steel and the hanger feet are threaded into place, eliminating the need for welds.

 

 

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The Integrated Engineering 2.0T FSI/TSI/TFSI intake manifold was carefully designed to provide an effective power increase across the entire rpm range with no loss in low-end power or spool time, with the ability to be used on any turbo setup, including the stock turbo. We have incorporated several motorsport features into this intake manifold, making it outperform the factory unit, as well as other aftermarket manifolds available.

 

FLOW TUNED VELOCITY STACKS - Featuring aggressively sized runners and velocity stacks that have been optimally tuned for large power increases throughout the entire RPM band. The flow tested velocity stacks deliver more air than any other manifold on the market.

 

QUICK SPOOL - With carefully selected runner diameter and length, the IE manifold provides a good balance of power gains throughout the entire powerband, with no loss in spool time or low-end power.

 

OPTIMIZED PLENUM VOLUME - This plenum on this manifold has been generously sized and shaped to distribute airflow as evenly as possible to all 4 cylinders. The 2.4L internal volume is a massive improvement over the factory piece and ensures a steady supply of air for the engine.

 

WATER/METHANOL READY - Each runner is ready for individual water/methanol injection nozzles. The cast and pre-drilled and threaded 1/8" NPT ports will make installing your water/meth setup easy. For those not using this feature, the manifolds include blocking plugs.

 

POWER INCREASE - They have carefully engineered and tested this intake manifold in house to get the best results possible in any condition. Due to the unique plenum and runner design all setups with K04 or larger turbos will see gains throughout the entire RPM range.

 

APR is pleased to present the Universal Electronic Boost Gauge!

The APR Universal Electronic Boost Gauge is a stand-alone unit designed to work in conjunction with a 52.4mm gauge pod. Available in multiple color combinations, the gauge reads up to 30 PSI under boost and down to 30 in.Hg in vacuum. The high quality gauge needle sweeps with smooth and precise motion thanks to a microprocessor driven stepper motor. The gauge features an anti-fog lense and is LED back lit and dimmable through factory dimmer or an aftermarket LED light dimmer.

The kit includes a 3 bar MAP sensor, universal harness, OEM butt splices, hose, clamps, zipties and universal mounting hardware to make integration into compatible gauge pods a snap! The gauge simply requires a boost tap to supply a boost pressure and vacuum signal to the included MAP sensor.

Also available as full plug-n-play kit for the MK7 Golf, GTI and R Models, which includes the gauge, mounting pod/panel, and vehicle specific harness. APR's plug-and-play wiring harness eliminates the headaches typically associated with integrating gauges into the factory system. The harness simply plugs into the gauge and into the factory wiring harness, eliminating the need to cut, splice and permanently alter the factory wring with specialty tools. It's quick, simple, and carries the quality one would expect from APR.