L20G-X features a completely redesigned grinding head with low-friction chain gear planetary drive, a new frame geometry providing superior maneuverability and easy tool changes, a new dust suppression fine misting system, and a true variable speed engine - machine can be run between 610 and 1090 rpms, allowing for more effective grinding and improved tooling life. Our new intelligent fuel management system, called Fuel Minder, which is now standard on all propane models, features closed loop feedback that is highly responsive to changes in the engine load, and provides optimum air-to-fuel ratio regardless of operating conditions. It also has fuel lock-off capability, emissions safety warnings with shutdown, and an LCD screen for user interface. Our engine kit has the highest power output in the 603cc class in the industry, and also, lower than the standard emissions, earning Blue Sky recognition.