The V2 is the better of the two because is uses resonance tuning too generate more power using a short ram air style intake. The cold air intake is good too, but i does require a bypass valve, sold by aem for like $50, to avoid sucking water into the engine.If your going for the most power, the Weapon-R Dragon intake has been proven by TunerPerformanceReports TPS.com, to make the most power for the civic, but the AEMs are definitley rock solid intakes as well