0 Siecle Response Ring (Intake Tuning) Toyota Prius 2015 - 2015 / Lexus CT200h / Prius V Created by the Japanese Company Siecle. This Tuning Ring is placed between the Intake Hose and Stock Air Box. The lip created from the response ring creates a funnel that concentrates intake air... MSRP: Was: Now: From: $45.00 - $125.00 Decrease Quantity of undefined Quantity Increase Quantity of undefined Choose Options