What air filter is good for 575M?

K&N air filters perform well and are really popular.

 

BMC, you will see a major gain. Many threads on this.

J

 

I have K and N's on all my cars.

 

The 2005 575 has a different size than the older 575 and K&N has no replacement.

 

Thanks for clearing that up mate.

 

I don't think airfilters really make a difference with the 575. On the 550 the problem is that all the compnents are shared with the 355, throttle bodies, airtubes, filterboxes etc. That is why there are decent performance gains to be had removing any of the restrictions,as the whole intake system is grossly undersized for the performance capability of the motor. On the 575, the intake has been properly sized in the first place IMO.