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Originally Posted by mikefocke
You seem to be a results-based engineer and the results I've seen say I wouldn't let one near my car for longevity reasons.
Can you cite any independent tests that refute the ones cited here ? |
Mike,
I typically am not a fan of K&N filters, in fact I generally find that they are counter productive for power plus a lot of the gripes that you stated in the article on your site.
The M96 filter has not followed suite with the previous units I have noted for other applications. I feel that part of this is due to the location of the Boxster's air intake. I have not noted any issues with the unit and my shop is at the end of a 1/8 mile dirt road.
I was able to pick up a solid 1 MPG (data logged) with the K&N in place and in every run on my dynojet I have seen a 2HP increase at minimum. Tonight I ran a test and saw almost 4HP from an engine that I was gathering baseline data from before we do an ECU flash tomorrow. I swapped the K&N for the stock filter back to back as I do with most every combination.
I give everything a chance to prove it's self and the K%N was something I was objective of until I saw the benefits in data, and didn't notice any degradation in filtration.
A bone stock engine won't see enough of a benefit from the K&N to justify it's expense and added maintenance, but when a 2.5 approaches and exceeds 200 RWHP the benefits are favorable.
My only gripe is that over-oiling the element can foul the mass air sensor and cause problems.