Bmw 328ci Cold Air Intake

"K&N 57 SERIES GENERATION II FIPK COLD AIR INTAKE SYSTEM -- Provides Additional Power Up To 9.69 hp At 6090 RPM, 96%-99% Filtration Efficiency Rate, It Significantly Reduces Intake Restriction As It Smoothens And Straightens Air Flow, This Allows The Vehi...

AEM COLD AIR INDUCTION SYSTEM, POWDERCOATED SILVER -- Engineered To Produce Significant Increases In Power By Locating The Air Filter Outside Of The Engine Compartment And By Tuning The Inlet Pipe In Length And Diameter To Match The Engine's Resonance, 50...