I would sell it and replace with something that works. If you want stealth, you can go with 9500ci. This includes excellent detector but jammer is ok. This is of course better than radar and jammer that suck. If you want the absolute best, go with a Laser Interceptor jammer and 9500ci. (You can keep the zr4 shifter and put that on too
). Boxster probably only needs 2 heads for front ($700). If you want something portable, get either 9500ix or valentine one.