by Robert Goldring
Date Added: Friday 27 August, 2010
Bought the KN panel filter and it is a nice item, but i did not notice any difference over the standard Mazda paper filter. So I sold the filter on.
I have just fitted a Pipercross Foam Panel filter for the same money and the car goes through the rev range far easier. Over 4000rpm its really noticeable. (Fitted to my Mk2.5 - 1.8)
The Pipercross Foam filter lets 30% more air through, which makes a difference.