Performance II Series instruments have the combined style of European sports car and racing gauges. This performance look has a classic gauge feel without the "in-your-face" look of a racing gauge. Full sweep stepper motors for higher dial resolution and blue LED back lighting at night. Titanium bezels and flat glass add to the high class, OE installed look. Just like always, NVU does not have any logos on the dial so the final result will be a professional, custom look. Air-Fuel ratio GENII gauges from NVU feature an LED backlit full-sweep analog readout of your AFR. ARF readings from 10:1 to 18:1 with 14 straight up make monitoring your mixture at a glance a breeze. Gauge operates from any controller or PCM output. Input ranges are user selectable :0-5V, .5-4.5V.