Greetings M/A !, Defenders of Speed is proud to announce the release of our upgraded CAI noise baffle. The second generation of our noise baffle uses a beefier extension spring and a dual axle butterfly design for buttery smooth action. It still quiets your DoS CAI equipped R55, R56, or R57 (turbocharged) MCS or JCW when you're just driving around town yet gives you that throaty, unleashed sound of an open intake when you open things up on the twisties and at the track. You can check out more info here: DoS Gen II CAI Noise Baffle (for R55, R56, & R57 CAIs) Happy Motoring! -Clint