DB Killer Calculator

Utilities

Free · Designed for iPad. Not verified for macOS.

Exhaust flow and sound calculator DB Killer is a practical calculator for motorcycle exhaust DB-killer design and comparison. Enter your exhaust and engine parameters, then adjust DB-killer geometry to estimate flow area, flow ratio, gas velocity, likely power loss, and approximate sound attenuation. The app also includes a sound simulator and side-by-side configuration comparison so you can quickly evaluate different hole counts, hole diameters, center openings, and DB-killer lengths. Features: - DB-killer geometry calculator - Exhaust pipe and hole area calculations - Flow ratio and gas velocity estimates - Approximate power loss estimate - Approximate dB reduction estimate - Sound simulator with automatic or manual baseline dB - Side-by-side configuration comparison - Metric and imperial units - Multiple interface languages - Local preference saving - No account required DB Killer is designed as an engineering-style estimation tool for riders, builders, fabricators, and exhaust tuning enthusiasts. Important: Results are estimates only. The app does not certify legal road use, emissions compliance, racing class compliance, or official sound test results. Always check local regulations and verify final setups with proper measurement equipment.

Ratings & Reviews

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The developer, Remigiusz Nowacki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Remigiusz Nowacki
    Size
    • 2.1 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    13+
    Copyright
    • © Exhaust Lab 2026
  • Privacy Policy

    • More by Remigiusz Nowacki

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