Product Description
Evolution Racewerks Test Pipe TPA4B7, Audi A4 B7
The factory (OEM) catalystic converter (Cat) is very restrictive on the exhaust flow in the exhaust system. Exhaust gas must pass through tiny "honeycomb" passages in the OEM cat which restrict flow and cause turbulence which in turn hinder performance. By removing the OEM cat with the Evolution Racewerks Test Pipe, power is unleashed!
Ease of Installation: (1 Easy, 5 Hard): 3
Key Features:
High grade 304 stainless steel material is used throughout our test pipe. Everything from the flanges, o2 sensor bungs and even the included nuts and bolts are full stainless steel.
100% TIG welded with stainless steel welding rod.
Mandrel Bent Piping
Mirror polish or brushed finish available
3" Diameter piping to match K03/K04 turbo turbine outlet.
Smooth transitions to 2.5" to match aftermarket or factory downpipes.
Welded both inside and outside of the flanges for strength and longevity.
Includes Downpipe gasket!
Includes all hardware needed to install.
Includes all stainless steel hardware, nuts, bolts and washers!
Limited Lifetime Warranty.
