Frequency Intelligent Exhaust systems perfectly combine many years of expertise and modern technology to create the world's most advanced exhaust system for Premium Automobiles such as Lamborghini, Ferrari, Aston Martin, Porsche, AMG, BMW...etc. Take pride in knowing that every exhaust we build, every product we create is the fusion of FI's unique design prowess, our cutting-edge and signature Valvetronic Technology, Built-In Intelligent Controller, and is the perfect combination of comfort and performance. Ever since our inception, our R&D team have consistently engineered high quality exhaust systems for enthusiasts who want a no-nonsense exhaust system that will perform and produce a superior sound, wherever and whenever. FI Exhaust products are truly one-of-a-kind. From a deep bass tone to an exotic high-pitched Formula 1 sound.