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CHANGELOG

Version history, feature updates, and development roadmap

v0.1.0-alpha

TBD (Current)

CURRENT

New Features

  • Virtual dyno system with SAE J1349 environmental correction
  • Two-zone combustion modeling using Wiebe function
  • Slider-crank kinematics and Chen-Flynn friction modeling
  • Heat transfer modeling (convection, radiation)
  • Multi-fuel support (gasoline 91/93 octane, E85)
  • Real parts database: 50+ parts from GM LS, Honda B/K, Small Block Chevy families
  • Intelligent parts compatibility checking (bore spacing, valve clearance, fitment)
  • CSV export for data analysis
  • Command-line interface (CLI)

Initial alpha release. Free for personal and commercial use during testing phase.

v0.2.0-alpha

Phase 2 (Months 4-6)

UPCOMING

New Features

  • Dear ImGui graphical user interface (GUI)
  • Real-time power and torque curve visualization
  • Interactive parts browser with search and filters
  • Configuration save/load with GUI
  • Enhanced combustion modeling (refined Wiebe parameters)
  • Improved volumetric efficiency calculations
  • JSON export format
  • Comparison mode: side-by-side configuration analysis

Improvements

  • Faster simulation engine (2-3x speedup)
  • More detailed validation reports
  • Expanded parts database (75+ parts)
  • Better error messages and validation feedback

Breaking Changes

  • Configuration file format update (automatic migration tool provided)

Major usability improvements with GUI introduction. Still free during alpha.

v0.3.0-alpha

Phase 3 (Months 7-9)

UPCOMING

New Features

  • Turbocharger simulation (compressor maps, wastegate control)
  • Supercharger simulation (Roots, twin-screw, centrifugal)
  • Intercooler modeling (efficiency, pressure drop)
  • Boost pressure vs. RPM curves
  • Compressor surge detection
  • Custom turbo/supercharger parts database

Improvements

  • Enhanced thermodynamic solver for boosted applications
  • Knock resistance estimates for forced induction
  • Fuel system requirements calculator (injector sizing)
  • Updated parts database (100+ parts including FI components)

Forced induction support - the most requested feature!

v0.4.0-beta

Phase 4+ (Production)

UPCOMING

New Features

  • ECU simulation (fuel, timing maps)
  • Knock prediction based on octane and compression
  • Variable valve timing (VVT) simulation
  • Emissions estimation (CO2, NOx)
  • Transmission modeling (gear ratios, final drive)
  • Vehicle simulation (weight, drag, acceleration)
  • Cost calculator (parts pricing integration)
  • Failure prediction (stress analysis on rods, pistons)
  • Custom parts creation (user-defined components)
  • API access for programmatic control

Improvements

  • Cloud sync for configurations
  • Community parts database (user contributions)
  • 3D visualization of engine components
  • Mobile app (iOS/Android) for remote monitoring
  • Multi-language support

Beta release. Transition to paid tiers with 30-day notice. Free tier remains available.

DEVELOPMENT ROADMAP

Phase 1 (Months 1-3)

Foundation

NOW
  • Core thermodynamic engine
  • Parts database (50+ parts)
  • CLI interface
  • CSV export
  • Dyno validation (LS3, LSA)

Phase 2 (Months 4-6)

Enhanced Models & GUI

  • Dear ImGui interface
  • Improved combustion models
  • Better VE calculations
  • Real-time graphing
  • Comparison mode

Phase 3 (Months 7-9)

Forced Induction

  • Turbocharger simulation
  • Supercharger simulation
  • Boost control
  • Intercooler modeling
  • Compressor maps

Phase 4+ (Production)

Advanced Systems

  • ECU simulation
  • Knock prediction
  • VVT modeling
  • Transmission modeling
  • Custom parts creation
  • Cloud sync & API

Want to influence the roadmap? Submit feature requests on GitHub or join the Discord community to vote on upcoming features.

VALIDATION STATUS

222

Tests Passing

19,071

Assertions Verified

70%+

Code Coverage

Dyno-Validated Engines:

  • GM LS3 6.2L V8: 1.19% error vs. certified dyno data
  • GM LSA 6.2L Supercharged V8: <5% error (supercharger modeling pending Phase 3)
  • GM LS7 7.0L V8: Validation complete, published on website

All validation data is publicly available. See Case Studies for detailed comparisons with real dyno results.

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