Air filter cover question
Hey Guys - Question on this.
I recently purchased a Macht Schnell Air Filter from one of the guys here. My question is: Should I leave the air filter cover off or putting back? Would it do any bad if I leave it off. I'm assuming with it off, it will bring more air in it but I could be wrong.
08' M3 Coupe AW | Coded | BPM Stage II Tune | ZCP Wheels | Performance Steering Wheel | MS Air Filter | ACM Track Pipes + Exhaust
CF Roof | CF Spoiler | CF GTS 2-Piece Front Lip | CF Mirrors | CF Diffuser
LCI Tail lights | Matte Black Kidney Grills | IND Reflectors | H&R Springs | 15mm/15mm MS Spacers | LUX v3