The JHM Audi 4.0T downpipe set is a complete downpipe solution for those looking to go Stage 2 and upgrade their stock, restrictive catalytic converters to a high-flowing alternative!
This downpipe/midpipe combo is a full solution, unlike other downpipes on the market that advertise as 3", but taper down to stock sizing close to the engine, reducing power output.
• High-Quality 304 Stainless Steel Piping
• High-Quality 304 Stainless Steel Transition Cones
• High-Quality 304 Stainless Steel Flex Couplers
• High-Quality 304 Stainless Steel Clamps
• Laser Cut Flanges
• In House Mandrel Bent Piping
• OE Fitment Quality
• 100% USA MADE
You can expect an increase in turbo performance with less turbo lag and more top-end power. Gains of 60HP and 95TQ can be seen over Stage 1 with appropriate Stage 2 software. We recommend GAS performance software or DS1 tuning, both in stock at Garage Auto Sports.
Catted or Catless:
Your choice between Catless or our High-Performance Race Catalysts can be selected from the options above. We relocate our HFCs from the factory location to further downstream for improved turbo performance and catalyst life.