BMW

This Mikes Custom Cat-Delete Down Pipe eliminates the catalytic converter for maximum exhaust flow for the BMW with 4.4l S63B44 engine

Available for the:

  • 2012+ BMW F10 M5
  • 2012+ BMW F12/F13 M6

Key Features:

  • 100% hand crafted in the Russia from premium French 304 Stainless Steel - flanges and O2 bungs included!
  • No Questions Asked  5 years Warranty!
  • Horsepower gains of 45 to 125hp average (Software upgrade) (gains will vary based on modifications of your vehicle).
  • Higher Max Horsepower Power Curve
  • Torque gains of 60wtq average (stock boost) up to over 140 tq (Software upgrade) (gains will vary based on modifications of your vehicle).
  • Higher Intial Torque Curve.  Torque curve hits faster and higher and longer.
  • Better throttle response and faster turbo spool up times.
  • Mandrel Bent 3.5" 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.
  • Exhaust hanger like factory that helps support the exhaust system.
  • Compatible with the factory or aftermarket exhaust systems.
  • Includes all hardware for complete installation.
  • We do NOT grind/polish our welds as some other manufacturers do. Grinding welds compromises the strength of the weld, and can lead to weld failure!

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 3.5" Catless Downpipe, more power is unleashed! You will feel the difference instantly.

Our Catless Downpipes is constructed out of 100% 304 grade stainless steel and utilize mandrel bent piping.  They are 100% TIG welded by our in house fabricators and built in the RUSSIA.  The factory turbocharger turbine housing utilizes a V-Band flange which we have duplicated and CNC machined cut out of billet 304 stainless steel.  Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods.  The O2 sensor is positioned at the factory location.

IMPORTANT: THIS ITEM IS INTENDED FOR RACE OR COMPETITION USE ONLY

Worldwide shipping!!!