Engine porting is a precise science where small mistakes lead to lost power. eliminates the guesswork by turning complex fluid dynamics into actionable dimensions. This software helps engine builders, racers, and enthusiasts calculate optimal port shapes, valve sizes, and flow rates.

✅ – fully backward compatible with V4.2.x projects and exports.

Beyond basic measurements, version 4.2.2 includes analytical tools to predict engine behavior and prevent mechanical failure.

In the niches of engineering—embedded systems, industrial control, vintage computing, or proprietary network protocols—certain tools become irreplaceable. is one such artifact. Released in late 2018, this version represented a peak of stability for a tool that handled not just arithmetic, but context-aware conversions: base-N translations with overflow detection, timing-cycle calculations for legacy PLCs, or memory-mapped I/O address generation.

Version 4.2.2 introduces incremental stabilization updates and calculation refinements over previous iterations:

: Priced at approximately $16.25 , it is considered a cost-effective alternative to high-end industrial CAD/CAM suites for hobbyists and independent tuners.

: Use the "Raise Barrel" control to adjust the barrel height in 0.1mm increments (or 0.01mm using arrows) to see how it shifts port durations.

: Addresses scaling and data-export compatibility with modern operating systems and data logging software formats like CSV and Excel.

Users can input flow bench data (measured in Cubic Feet per Minute) directly into the software to see if the physical port size matches the theoretical requirement. Step-by-Step Guide to Using the Calculator

is a specialized engineering software designed for 2-stroke engine tuning and modification. It is widely regarded in the small-engine community for its ability to convert complex port durations into physical measurements and vice-versa. 🛠️ Key Technical Features