Originally Posted by FPenvy

i've been running my non res test pipes and non res CF CBE for almost 2300 miles now and i get that "buzz" for the first 10 mins after start up when i leave red lights and stop signs. other than that it dies out. plus i usually got my iphone playing music. i'm still young so my music is typically loud whenever it's on as well. idk if this will help anyone but non res everything is the only way to go in my opinion. i bought my exhaust for HP gains and to make my Z sound like it should....MEAN! lol i get nothing but compliments on it as well so thank you Tony