What Ekona means/said is "Uprev" this is the software most commonly used to remap 350 and 370Z's. The ECU in the 350 is adaptable, meaning that even if you change breathing mods, i.e. exhaust, air filter, the ECU will adapt the airflow to match the limits set at the factory, you'll need a remap (Uprev) to change this and benefit from your mods
p.s. 06+ cars are "Rev Up", confusing I know