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Now, to navigate the nGauge’s various screens and menus, you simply touch the parameter you wish to modify. It is quite user-friendly and intuitive. To go back to the main menu, touch any parameter on the ‘Gauge to get the following menu:
The Diagnostics menu allows you read and clear any trouble codes or check engine lights you may have stored in the PCM. It also allows you to change settings such as under what conditions the nGauge turns on and off. (For reference, I’ve found the best setting on a Mustang to be wake up and sleep with alternator voltage, meaning the nGauge turns on when it senses the increased voltage output by an active alternator and turns off when it drops back to battery voltage.)
The Tuning menu allows you to flash a new tune file to the PCM. Having multiple tune files allows you to, say, run 110-octane fuel and a higher-boost map at the track and switch back to a 93-octane map for the drive home. Having the tuner permanently mounted makes this very convenient, since it’s one less thing you have to remember to bring with you to the track.
As I hinted at previously, there are scores of devices on the market that will flash a new tuning file to your PCM. The real advantages of the nGauge, however, are in its gauge and data logger functions, so we’ll focus on those.
Gauges and Data Logging
One of the primary purposes of the nGauge is to be a gauge. To that end, it has several different configurations that can be used to display data. The default one is the “Quad Gauge”:
