CHANGELOG
Version history, feature updates, and development roadmap
v0.1.0-alpha
TBD (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)
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)
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)
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
- 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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