The ngauge also uses an SD card to load files so it's really easy to put new tunes and datalogging config files onto. We've got tuning from the 4 top calibrators in the industry as well all under one roof. Lund Racing, Palm Beach Dyno, Li Tuning & Racing and AED. The main thing is that it's small and can be easily mounted like a. Palm Beach Dyno will use this stock file to build your custom tune file. Once complete, we will email your new custom tune to you. Custom tune files will end with an.enc file extension. Example: 93OctaneTune.enc, RaceTune.enc, etc. Simply drag and drop your custom tune file into the CUSTOM FILES folder on the nGauge.