true, but just eyeballing the 2 filters I have, the pleats look to be the same deepness and frequency.
one disadvantage I know of is that there is less volume of air between the filter and the turbo inlet which could exagerate turbo lag a very small amount.
However if I route the air tube differently and make it longer, I can regain some of that volume. But I'm not too worried about it.
the main thing is plumbing in the crank case vent to help ring seal.
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