The ARM 4.0T Downpipes immediately improve backpressure in your exhaust system, allowing your Audi 4.0T turbos to spool faster and generate more power lower in the RPM range. 

The OEM 4.0T downpipes incorporate two large coffee can- size catalysts which reduce exhaust flow and power from your 4.0T.  By replacing your OEM 4.0T downpipes with the ARM 4.0T downpipes you will eliminate this restriction and free up exhaust flow.

Another drawback of the OEM downpipes is they are designed to cross over each other.  The driver side turbo connects to the passenger side midpipe, and vice versa on the opposite side.  This forces the exhaust gasses to take a long pathway with several sharp kinks and turns. The ARM 4.0T downpipes begin and end on the same side to improve airflow and shorten the travel-path of the exhaust gasses. This results in faster turbo spool, more torque, and improved throttle response.  

Features:

• Increased Power and Torque
• Faster Turbo Spool
• Improved Exhaust Note

What's Included:

• 2x ARM 4.0T Downpipes
  
• 2x ARM Turbo Gaskets
  
• 2x ARM Midpipe Gaskets
  
• 10x Replacement Turbo Studs
  
• 10x Turbo Stud Nuts
  
• 6x Midpipe Bolts
  
• 6x Midpipe Nuts