well i was at a local shop, evolution autosports. I was getting my invidia n1 put in. after everything the guy mentioned that my altinator was going bad. lately when i turn my car on, the inside lights flash slightly and when i turn on the a/c i hear a roar sound from the exhaust as if i was pressing the gas slightly, but i'm not. when i put up the windows, put down the top, turn on the lights I hear the same sound. what can it be?? the altinator??

 

Maybe - go to Autozone and have them test it for free.