Originally Posted by PaulZ370

Nismos or not, All 370Z's are true duals...

Two separate Headers, each feed a separate Cat, down to the X-Pipe, then two pipes terminate in a large Exhaust drum and exit thru dual tips in the back.

When I changed to the FI system, the huge Drum Exhaust that I highly disliked became two distinct exhaust lines all the way to the back, with an X-pipe to balance them out. With the higher flow rate of the Hi-Flow FI Cats and Exhaust piping, I picked up a few horses and highly improved throttle response time...