#5367, "RE: Another popping noise question..." In response to In response to 0
You have never told us what type of headunit you have. That could be the problem in this situation. If you are using the stock head unit, with the infinity amp, that could introduce the turn-off pop. You could also be backfeeding to a stock amp, if you still have one in the car.
There are a few things that you can try to do to test the problem. Does the pop happen only when you turn off the car or whenever you turn off the radio? When I'm diagnosing problems in a system, I need to have specifics as to when the problem occurs.
I'll try to give you some solutions, but give us as much info about the vehicle, headunit, system diagram, wire guage, etc.