It was already fitted when I bought the car, so I only have the "Gruppe M -> standard airbox" experience to compare.StevenH72 wrote:Ah OK, so between the GruppeM and OEM you've noticed nothing at all? No benefits from removing the GruppeM and no benefits when installing?tertius wrote:I had a Gruppe M and removed it, going back to the standard air box. I have noticed absolutely no difference in power and I'm completely indifferent to the sound.
I do seem to be in a minority of one though.
The sound of the Eventuri VAI carbon intakes is what I really want to hear first hand at the open day before I take the plunge.
But yes, no noticeable difference at all in performance, response, etc.. I haven't had it tested in any objective way so it is purely my personal impression - I do a fair few track days so it gets to stretch its legs.