After looking into the aftermarket for a drop-in filter and scoops. Seems like RPI was 'POPULAR' but honestly, WAY overpriced, as was AFE with there $255 scoops..
After seeing also that the expensive BMC filters have had a bad track record of falling apart, and that air scoops in general are all equally made (please fanboys save me the .2hp gain from a scoop you thinks GRABS more air LOL) redirect air into the air intake track, simple enough, no heavy technically research here.
K&N drop in filter: $44 each
BMW E60 M5 S85 5.0L > Engine > Intake > ES#2500847 Air Filter - Left - 33-2352
Mechunik Aluminum Air Intake Scoops: $99 in red or black (still a bit pricey but better then 200$+ from others)
Mechunik Aluminum Air Intake Scoops For BMW 5 Series and M5 - 2004-2009 - E60/E61 From Bimmian.com
I think this is a great priced alternative for the S85, to get more air, and more free flowing air compared to the overpriced options out there with no effect on performance compared to the others.
After seeing also that the expensive BMC filters have had a bad track record of falling apart, and that air scoops in general are all equally made (please fanboys save me the .2hp gain from a scoop you thinks GRABS more air LOL) redirect air into the air intake track, simple enough, no heavy technically research here.
K&N drop in filter: $44 each
BMW E60 M5 S85 5.0L > Engine > Intake > ES#2500847 Air Filter - Left - 33-2352
Mechunik Aluminum Air Intake Scoops: $99 in red or black (still a bit pricey but better then 200$+ from others)
Mechunik Aluminum Air Intake Scoops For BMW 5 Series and M5 - 2004-2009 - E60/E61 From Bimmian.com
I think this is a great priced alternative for the S85, to get more air, and more free flowing air compared to the overpriced options out there with no effect on performance compared to the others.