I agree on a performance car, the system should sound better. Other brands can do it. Does the rcf have valves in the stock system?
Its is annoying knowing you have to fork out ££££ for the sound you expect from a v8 when you have only just bought a car. Having said that I do love a mod!
One of the draws of the Merc is knowing you don’t need wheels, exhaust etc to make it how you want.