Quote:
Originally Posted by Nick911sc
So what's the difference between the Cosworth's and K&N's?
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Cosworth is disposale (you have to buy new one's at regular service intervals).
I think K&N flows more than 10% over OEM.
The K&N and Cosworth both claim around 98% (K&N states 96-99% is what their filters normally test, obviously variance exists).
K&N Air Filter Efficiency Testing