I have installed the audioplex IR It does work well, tho i have had to replace the stealh box on 2 different jobs. Make sure you get the 4056 model, the SC3100 cable boxes are running in the 56kh range and that is where i have had the issues as well. Tech support has also told me that if you move the IR bug on the cable box off to the side or on top (making the IR travel around the corner) that works to weaken the signal.I guess its too strong.