I just install the stillen long tubes today and im not uprev tuned yet....but i do have the gt and was planning on using it to monitor my afrs but now that im done with the install my bdgt is intermittent between 18 and 0. it doesnt show any number in between just 18 something or 0. Could it have something to do with my extending the o2 wires or maybe because i put in a new universal bosche o2 sensor in the driverside front?