Evolution Racewerkz Sports Series 4.5" High Flow Catted Downpipe for the B58 Engine

Key Features:

• Fitment for the new BMW B58 Engine
• High Flow 200 cell metallic catalytic converter used
• Higher Max Horsepower Power Curve
• Higher Intial Torque Curve.  Torque curve hits faster, higher, and longer
• Better throttle response and faster turbo spool up times
• Mandrel Bent 4.5"/4" piping.  Smooth transition to the exhaust system
• 100% Stainless Steel Construction
• 100% TIG welded for better quality welds
• Precision CNC machined turbocharger V-Band flange
• Brush Finish (standard) or optional Polish Finish
  
• Available with high temperature Black Thermal Coating to reduce underhood temperatures
• Optional - Additional O2 sensor bung for wideband O2 sensors (comes with pre-installed plug)
• Optional EGT sensor bung for EGT gauges (comes with pre-installed plug)
• Compatible with the factory or aftermarket exhaust systems
• Track tested durability
• Includes all hardware for complete installation
• Limited Lifetime Warranty
• Made in the USA!
  
  
  Restrictions in the exhaust system robs horsepower and torque especially on turbocharged cars.  Thus, removing as much exhaust flow restrictions will increase horsepower and torque significantly.  The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. The factory catalytic converter is made up of catalyst material formed into "honeycomb" weaves. Exhaust gas must pass through these tiny "honeycomb" weaves on their way to the exhaust system thus causing a major exhaust flow restriction. It also causes turbulence after the catalytic converter which causes the exhaust flow to slow down (which increases restriction). By replacing the factory downpipe/catalytic converter with our Sports Series 4" High Flow Metallic Catted Downpipe, more power is unleashed!