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F30 Evolution Race Werks 4" Catless Downpipe

  • Sale
  • $495

F30 4" Catless Downpipe
Fits 2012+ F30/F32/F33/F20/F21 N55 335i, 335xi
N20 BMW Catless downpipe

Horsepower gains of 14 to 16whp average
Available in Thermal Coated Black or Brushed Finish
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 Competition Series 4" Catless Downpipe, more power is unleashed! Our dyno testing has shown around 14-16whp average peak gains and upwards of 24wtq peak gains! While peak horsepower is nice to look at on dyno charts, what's more important is the power curve. If you look at the dyno charts, torque hits MUCH earlier and harder. The torque curve is BROADER throughout the RPM band. More usable power. You have more time spent in the RPM band with higher horsepower and torque. This equates to faster turbo spool up (less turbocharger lag) and better throttle response. Bottom line, faster. You will feel the difference instantly. For off road use only.

F30 Downpipe Applications:

• 2012+ F30 N55 335i, 335xi


• Horsepower gains of 14 to 16whp
• Higher Max Horsepower Power Curve
• Higher Initial Torque Curve
• Better throttle response & faster turbo spool up
• 4" Smooth transition to the exhaust system
• 100% stainless steel and thermal coated
• Includes all hardware for complete installation

N20 BMW Downpipe

BMW f30 335i downpipe

100% Stainless Steel construction. Available with a black thermal coating or with a beautiful brushed finish. Includes Stainless Steel CNC Machined O2 Sensor Bungs and Laser Cut Brackets.