I installed this perfect pass star gazer in my 1989 Pro Star 190. It works great. Better than the perfect pass that comes in new malibu boats. The GPS syncs fast and I have never had any issues with it losing signal. The installation was very easy. I did it by myself in a couple hours following the awesome instructions that came with it. This is a must for any boat owner. Speed control is not only a safer way to ride but it also helps lower my fuel consumption as well.