For my brand new Z what is the difference from a single exhaust and a dual? Any opinons or anything i should know?

 

its basically the look, unless you get a true dual. If you look under the Z, you will see that from the factory, the Y-pipe links the exhaust piping into 1 pipe, then leads to the SINGLE muffler with 2 tips (one on each side). This setup would be the same as a "single exhaust" setup. Of course with each brand, there are discussions with gains and sounds and stuff, thats where you put in your own preference and buy what you want. But true duals do not link the piping, therefore there are really 2 pipes connected together under the car. hope this helps.

 

thanks do u know where i can find that discussion

 

this is basically what i have discovered over 1 year here about dual and single...

Cat-Back: creates "back pressure" in the engine...supposedly help N/A engines spin more efficiently. not as many gains up top but little if no losses down low

True-Dual: creates more top-end HP and TQ but has significant losses down low.

the sound is something only YOU can decide on

 

just do a search man. There are TONS of different threads on exhaust sounds and other comparisons.

in the search field, just type EXHAUST. you will be surprised how much info is on this site.

 

One thing to consider with respect to the NISMO exhaust is this. While it retains the factory configuration of a Y-pipe to muffer with dual tips, it has a more efficient Y-pipe than stock and it is a larger diameter pipe that stock. Basically, it's 60% larger than stock so unless you're going FI, you're probably not going to be pumping that much extra exhaust through it to need a true dual.