a longer intake pipe will decrease your performance. The shorter, the better. Honda owners gain more power when running cold air intakes because of filter location. it is out in the fender where the cold air is but while the normal intakes is in the hot engine bay getting air from the hot radiator fan. A short ram intake in the engine bay with a nice cold air box will beat a extended cold air intake any day. There have been dyno tests where both, a short ram intake, and a extended cold air intake being used sticking out of the engine from the hood and the shorter one won hroughout the rev band eccpet for a spike the cai had at 4400 rpm. As for an nsx, it all depends. if the air comming in the engine from the side scoops dont get heat soaked by the time it reaches your air filter, a extended intake will decrease performance. if it does, the extended intake piping might work if it does get the colder air. As for the SoS the air induction sounds wonderful but the price... kind of pricey for a piece of plastic. if they molded it out of carbon fiber, it would of justified its price. I am downing your product Chris, but the price shocked me. I originally saw it in a link off of prime and thought it was a great product but after looking at its price, it shocked me seeing how expensive it was.