BMW M3
Hi Guys,
Fitted my panel filter this morning, cleaned the housing etc..and took it for a wee run... All seems fine and it even feels smoother. Although that might be my imagination lol.
Anyway, got back on the drive and gave it a few short revs to 2.5k, and noticed on the way back down, it makes a whooshing noise at 1500rmp.
It sounds quite smart, and i dont mind it at all, but just wondering if this is normal, or have i fitted something incorrectly?
Thanks
Fitted my panel filter this morning, cleaned the housing etc..and took it for a wee run... All seems fine and it even feels smoother. Although that might be my imagination lol.
Anyway, got back on the drive and gave it a few short revs to 2.5k, and noticed on the way back down, it makes a whooshing noise at 1500rmp.
It sounds quite smart, and i dont mind it at all, but just wondering if this is normal, or have i fitted something incorrectly?
Thanks