my stang has charging problems at stoplights and at idle too. you can even see the needle drop. also my car runs a lot hotter, and the heat wont work at idle. it will only pump out heat at like 1500+ rpms. a pain to warm in the morning
total performance is the best shop in the world. my dad and i go there all the time for his model a. and definitly try and not put a bumper on that nice bumper, your car is so slick