Hello, I know this has is a bit of an age old question, but has anyone, or is anyone using a K&N panel filter in a 2.0 petrol? Does it make any noticeable gains, even minimal? There seems to be confliction of opinion regarding the effectiveness of these filters. There are some that support gains made and dyno readouts to back this and others that are sceptical and disregard any increase in performance. I know they offer an increase in service life, but in theory also increase airflow which could possibly provide some margin of gain in power.