Quote:
Originally Posted by churchx
Aftermarket drop-in filter will net you 2/3rds of gains of full intake for 1/5th of price.
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It is often the case that better flow comes at the expense of worse filtration. As it is impossible to find test data on filtration for each filter one doesn't know how much, if any, extra solids are being ingested by the engine. I do not know if it is significant; just that there is no free lunch.