APR DPK0014 76mm Downpipes and High Flow Cats Audi 4.0T

$2,223.00 $1,999.95
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The APR DPK0014 Cast Inlet Downpipes replaces the kinked and restrictive 60mm factory downpipes 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, significant power gains, and an intoxicating exhaust note, while remaining civilized during normal daily driving.

The APR downpipes feature investment cast, T304L downturns designed to maximize flow and minimize turbulence. The mounting flange and O2 bungs are integrated into the castings and with a wall thickness of 2.5mm, the APR downpipes produce a refined exhaust note compared to thin wall tubing systems. The cast downturn mates to a T304L flex section that is fully sealed with a corrugated inner lining to improve flow and reliability. The T304L exhaust pipe is rolled to 76mm diameter with a 1.5mm wall thickness.

APRs engineers specified high-quality, high-flow GESi metal 300-cell catalysts ideal for forced induction applications. Internally each catalytic converter features a proprietary blend of precious metals and loading technology that helps to reduce emissions and smell common on cat-less setups. With performance in mind, the catalyst is placed far away from the turbo outlet to reduce turbulence in the downpipe and to help reduce under-hood temperature. 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.

APR DPK0014 highlights:

  • T304L stainless steel construction.
  • Cast Inlet with port-matched v-band flange
  • 300 cell, 100mm x 100mm GESi catalysts.
  • Argon back-purged TIG welding.
  • Brushed and de-burred piping.
  • Non-swedged/slip-fit/flanged piping.
  • Investment cast O2 bungs with billet plugs.
  • OEM-style slip-on clamps.
  • Reducer for OEM catback compatibility.

APR DPK0014 Downpipe Vehicle Fitment:

* APR FIT0003 S8 adapter (sold separately) must be installed as well.

APR DPK0014 Downpipe Manufacturing:
APR Downpipes are fully T304L stainless with cast downturns, flex sections, 76mm tubing, and GESi metal 300-cell catalysts. Stainless clamps are included as are O2 extension harnesses.

APR DPK0014 Downpipe Install:
Installation of APR downpipes typically takes 6-7 hours. Basic hand tools are necessary for installation, no cutting or welding is required. Please observe all safety precautions and follow proper installation guidelines while working on your vehicle.

APR products are warranted to be free from defects in the materials and workmanship prior to installation. This warranty does not cover labor, misuse, faulty installation, failure of related parts or parts purchased other than from APR, LLC. This warranty extends to the original purchaser for as long as they own the vehicle and the APR product.
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