Hi, I have a cthe 2012 fabia vrs and today had a new catback exhaust (non resonated fitted by cobra sports which is great) I have a standard air filter but when in a service station toilet having a pee I saw a poster from k & N filters saying you can get up to 10% better performance with these (is this true / will it make any difference when I get my car serviced next to buy one of these filters to give to my dealer to fit when doing Service or is it something that is very minimal and hardly worth it) many thanks.

Do not waste your money on a K&N.

Fresh new filters are only £16 when you need them.

Im agree with George

I've had them on bikes before,the only noticeable gain is that you can clean them out and reuse them, not performance wise

Thanks will give it a miss then.