Billy Boat Performance Exhaust for 1999-2006 BMW 323i/325i/328i/330i [E46]

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The factory stock 330i features the powerful 3.0L inline 6 and produces 225 HP and 215 lb-ft. of torque. Developing an exhaust system worthy of this outstanding automobile was a tall order. Billy Boat Performance Exhaust was up to the task and delivered the ultimate performance exhaust for this beautiful BMW.

Featuring mandrel bent, T-304 stainless steel and precision hand-craftsmanship, the system for the 330i provides custom-tuned performance with a harmonious, subdued exhaust note and no interior resonance. The proprietary design of each Billy Boat Performance Exhaust provides increases in horsepower and torque throughout the entire RPM band.

Aesthetics were another important factor in the development and design of this muffler system. Simply providing performance gains and a balanced exhaust note were not enough to declare this the ultimate system for the expertly engineered BMW 330i. With a fully-polished muffler and twin 3.5"" fully-polished double-wall tips the Billy Boat system delivers well beyond expectations.

  • Limited lifetime warranty
  • Guaranteed to produce huge HP and TQ gains
  • Fully polished mandrel bent SS tubing
  • Increase in fuel mileage
  • No interior resonance
  • Incredibly deep rumble
  • Designed to fit perfectly
  • All bolt on

Installation Guides:


  • BMW E46 323i 99-00
  • BMW E46 325i 01-07
  • BMW E46 328i 99-00
  • BMW E46 330i 01-07
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