Well ok Invidia Cats are in, they were a little pain in butt to install,, there are two bolts that you have to get from the top, and they were tuff,

Ok so there in and do sound great I will make a video over the weekend, be as it may they sound great.
But there's a but, a but in the form of a rattle/vibrating sound on the way down, what I mean is when you rev up and let go of the gas there is a weird sound, we believe the cause is because the oem cats have a center support that holds them in place and holds everything tight. So tomorrow were off to the muffler shop to see it there is some way they can make the oem support work. For sure it can't stay like that. Were not to happy tonight.. I will update,,

 

I wonder if the rattle coming from one of the exhaust shields?

 

Any added drone? Is the drone from 1200-2000 still there? How much louder is the setup at cruising/accelerating 2500-3500?

 

I changed the cat backs to Invidia sound is night and day,,, big mistake on my part for buying the Magnaflow. now on the 08 we had Fast Intentions complete cats and exhaust
it sounded real good,, but in my opinion, Invidia has them beat,, we have a great deep sound no rattle, vibration, drone, just a deep deep sound,, we went out this morning to a local car meet and nobody could believe the great sound,, there were about 20 350z out there, and everyone was amazed,, so now I'll put the Magnaflow on ebay...
When we take the car next week for the Dyno and tune, we will make a short video

 

How is the volume of the new invidia catback and hfc setup compared to the magnaflow WITHOUT the hfc?

 

Louder, and deeper about 20-30% I will post the video