BMW 535xi
before: 2011 BMW 535i Muffler Bypass, Regular $150 each or Stainless $200 each
after: 2011 BMW 535i Muffler Bypass, Regular $150 each or Stainless $200 each
before: 2011 BMW 535xi Exhaust Resonator Bypass W/ X-Pipe, Regular $400 or Stainless $500
after: 2011 BMW 535xi Exhaust Resonator Bypass W/ X-Pipe, Regular $400 or Stainless $500
2013 BMW 535i Exhaust Resonator Bypass W/ X-Pipe & Exhaust Cutout, Regular $500 or Stainless $600