VLS Wideband A/F gauge may show a code on the OLED display screen which indicates the status or issue with the gauge and/or gauge component(s):
 Gauge is under calibration.
 A/F sensor is not reading. Check connection to sensor and/or replace sensor.
 Gauge is setting to original manufacture setting.
 Control box is not reading. Check connection to box and/or replace box.
Due to the design of aftermarket coilover systems like the Revel Touring Sports Damper, coilovers on vehicles with McPherson type struts will have metal pillowball bearing upper mounts and may introduce some noise during driving because
there is now metal on metal contact (OEM suspensions use rubber mounts to supress these noises). However, if there are loud noises occurring (like a binding noise), double check the top lock nut and make sure that all other hardware
is tightened as something may be loose. Also check that the spring preload is set correctly (we recommend preload to be set from 0mm-15mm).
We also recommend to inspect the other suspension components on the vehicle as there could be something else causing the noise.