hey guys
my zl1 have some small modifications that i will list below, and when i tuned it the tuner said the car is really loud and that its not supposed to sound like that. i asked him what could be the problem and he said the cat backs, and keep in mind my cat backs are stock! so did anyone have a problem with their cat backs being louder than normal with time? cuz im beginning to think that the stock cat backs gets disrupted with time!
my modifications:
Lower cranck pulley
gt9 cam
tr7 spark plugs
dynamics 850 ID injectors
stock mainfolds and JBA catless pipes (used to have ARH long tube)
supercahrge snout
roto fab CAI
93 throttle body
heat exchanger
water pump
car should easily make 570rwhp
so share with me what you guys have experienced and what you know!
