^^ just saying that last bit because a lot of people underestimate the Nissan ECU. So many people (me included) will try to flash tune them, stick boards and chips in to them, nistune etc, only to wish they hadn't =/ From my experience I could almost advise to just stcik with your ECU until you upgrade injectors and what have you....the ECU is more than capable of controlling things until you max out injectors and airflow meters etc etc