i just bought a 2002 z28 and i cant tell which borla exhaust system is on the car. all i no is its pretty damn quite, which kinda defeats the purpose of it. how can i tell the model, for replacement

 

If you have an inlet and an outlet on the passenger side of the muffler it's the non adjustable type. If it only has an inlet on that side, it's adjustable. If it's quiet it probably has a blocking plate installed, or one of the plates with a small opening in it which forces most of the exhaust through the muffler.

 

thank you