basically what is happening. is when im driving around town with the windows open. or on the highway with the radio on the same volume setting, 22 and up. it is very distorted. now its fine when the windows are up on account of the car being pressurized... that sounds dumb. but when you are listening to it with the windows down. it sounds like crap. as soon as you roll up the windows it changes to normal. any ideas... im thinking the stock radio doesnt have enogh power.