“Fi sounds absolutely mean. The pops you get between shifts are pretty cool. You can’t replace the sound of this V8 turbocharged engine” - Vehicle Virals Dyno results showed 600whp for a M5 Pure Metal Silver LE that’s advertised to have 600chp from factory. That’s without a tune. Drivers on average can expect a 5-10% performance boost after installing a full catless Fi system. #FiEXHAUST l #ExperienceThePassionOfEngineering Thanks to Vehicle Virals ——————————————— #FrequencyIntelligent #ExhaustS