Originally posted by louisw:
The advantage the K&N can offer is that it doesn't clog like a paper filter; it actually filters better the dirtier it gets. This means you'll get more consistent performance over time and it also means you won't have to service the filter as often.
I'm afraid that in all my mass air flow studies I have NEVER seen that happen... How is that possible????

Heat soak has been a killer on my car since trying to increase performance in the Duratec..