Useless unless you drive in flooded streets often, which probably means you'll have more issues than a flooded motor. It's cheap insurance but not needed 99% of the time, and you'll lose power in the process.
Currently Injen has the only Nismo-specific intake model, but that doesn't mean you're limited to just that intake. Stillen fits with a minor retrimming of the bumper ducting, as does the AEM one. We currently run the AEM intakes on our shop Nismo.
We carry both in stock!
