You wont be complaining once you get the GruppeM. With an engine like the S65, the induction sound is unbelievable. Esp when you are mid-high RPM where your exhaust kinda mellows down. Now thats some scary shit.
I made dogs whine when i blow the engine.
IMO a drop in air filter cannot give the kinda sound the GruppeM does becaues the design and material for the GruppeM is different. There is just much more sound across the mid- high rev ranges.