For anyone who's annoyed by excessive noise,drone and rasp after you upgraded your muffler,headers and catback I have the answer to your problems. I did the 04 altima headers,ebay N1 catback and magnaflow muffers and that's when all my problems started. I added a Magnaflow 10436 resonator and a Magnaflow catalytic converter 99305HM and my problem is now solved. Listen to this clip and i'm doing over a 120+ km/hr and tell me if you can hear anything.
Race, video, 001