Originally Posted by 2011 Nismo#91

Nope. All the NA mods available won't get a Z to 400 imo.

Performance wise here is some info on the nismo exhaust.
two different nismo exhaust????? (nismo car ver and S-tune ver?)

The base Z is 332hp
The Nismo exhaust adds about 8hp alone. So the Nismo's Tune adds the other 10 to get to 350hp.

So saying the FI exhaust addes 20hp to a Z seems about right, 10hp (as apposed to 8hp) or so because it's slightly larger and less restrictive with the other 10hp coming form the Tune.

So you better really like that sound because your paying alot of money for 2hp and losing a lot on selling a used exhaust.