This add-on contains flight model and engine configuration files to improve engine and aircraft performance.  Climb and Cruise charts from the real airplane handbook are included in the zip.  Also, auto-rich and auto-lean settings have been added, depending on the mixture lever position.  Fuel consumption is affected accordingly.  See the cruise chart for details.  Thank you to Flying Fries for the cool airplane.  To install, copy the contained folder to your community folder.