But thats deff comp grade stuff, its actually stupid that he stood there that kinda power and that amount of bass is harmful to your health. hes either going to go completly deaf, blow his hear drums, or interrupt his heart beat.
Now for the bad effects on the car itself, its a ford exploder, and its not an OBD 1 vehicle so it has a knock sensor, might sound crazy but its true stereos set those things off and screw with your computer, he'll be lucky if that car lasts him a year with that kinda stuff in it.
that is just absolute insanity..in every way..WOW!...in some ways it's kinda sorta something within the realms of building an engine...i mean. how much hp do u really need...n how much do u make? its really about stomping the competition...not what's necessary.