I've got a Pipercross 'induction' kit on the valver. It's the one that replaces the bottom half of the airbox with a foam basket thing. Car needs a service so air filter would normally get changed but I don't think the foam filter bit can be replaced.
If it can where can I get replacements? (and no I'm not spending £100 on a whole new one

)
If it can't whats the best way to clean the filter?
Thanks!