By the way, one of the English magazines (REVS) did a shootout of over 30 replacement air filters. Comparing cost, filtration and max flow on a meter

The K&N won hands down, most foam filters actually decreased air flow. Only filters that flowed more than K&N were wire mesh types

Unfortunately the air filters available here in England are not the same as those in the US (apart from K&N) so these results may not apply to KKM (KMM?) and the other US filters as I've never seen them.

One things I will state is that the air filter is not the restriction on our intakes, its the Intake manifold and the turbulence that hinders the flow.


Mad Mole
Visit Mad Moles Mondeo Madness
2L Zetec, Cams, Stage 2 head, Valve work, Powerflow, Unichip, AEM Ram, K&N, Ecotek, 75mm Lower etc.
192 BHP, Faster than a speeding Duratec!