Quote Originally Posted by redrumracer
nitrous isnt forced induction tho. its a power adder but still na.

forced induction increases the pressure in the intake to a pressure about atmosphere, nitrous doesnt do that.
Nitrous may not be considered forced induction because it's not forcing air into your combustion chambers but it does increase combustion chamber pressures so the shit sure as hell isn't naturally aspirated. Does your engine normally ingest nitrous oxide? No? Then it's not natural. It's more FI than NA in any aspect.

OP you should go search Honda-Tech.com since it is a technical site and you will probably find a shit ton of information about N2O on S2000's.