2023-01-27 00:00:00 This app provides, using temperature, altitude, humidity, atmospheric pressure and your engine configuration, a recommendation about optimal carburetor config (jetting) for karts with Vortex OK & OK-Junior engines (DJT, DDJ, DST, DDS models) which use a Tillotson diaphragm carburetors Valid for the following Vortex engine models: • DJT (Tillotson HC-114a, HC-116a, HW-43a, HW-43-CNC carburetor)