[A.Healy]

Will it make any difference?

Id be putting on a cone filter,removing top of the air box and the old filter

 

[daveslp]

It will make marginal difference if its remaped and has a full system. Not worth the bother otherwise, something for the insurance man to upset you with incase of an accident.
Will make the car louder too

 

[KevC]

Better off with an ITG Air filter IMO!

 

[Declan]

As per Kev - a good panel filter and smoothen the airbox for better results.