I don’t think I’ve ever heard anything about the Crosstrek, or anything from Subaru being underrated. Someone should probably calibrate their dyno.
What I have seen in other air filter tests, is that a clean K&N filter is great. However, they plug up quickly, then are not so great. If you want a filter that is very good, but requires regular maintenance, go with the K&N. If you want a good filter that requires minimal maintenance, go with the stock one.
Other air filter tests I have read had similar results with new filters. They also determined that the K&N would become restricted first, It has little capacity for dirt. Unless it’s kept very clean it may cause a loss of power. I’ve also seen a significant number of cases of mass air flow sensor contamination after the owner cleans and re-oils the filter, and a few cases of a high flow filter setting a check engine light just because of the flow difference.
A pull without any airfilters? What would the figures be then?
Dit you guys reset adaptive values before every test?
Can’t beat wrapping a pair of women’s tights around the intake box with no filter !
k&n arent worth it stopped buying them years ago the dont stand by their lifetime warranty , had one on my 1997 jetta tdi ,for a few years and the metal rods built into the rubber rusted and the filter was worthless , ,and no they didnt stand behind their warranty since the place i bought it from when out of business , save your money and just buy regular filter s
Comments
I don’t think I’ve ever heard anything about the Crosstrek, or anything from Subaru being underrated. Someone should probably calibrate their dyno.
What I have seen in other air filter tests, is that a clean K&N filter is great. However, they plug up quickly, then are not so great. If you want a filter that is very good, but requires regular maintenance, go with the K&N. If you want a good filter that requires minimal maintenance, go with the stock one.
Other air filter tests I have read had similar results with new filters. They also determined that the K&N would become restricted first, It has little capacity for dirt. Unless it’s kept very clean it may cause a loss of power. I’ve also seen a significant number of cases of mass air flow sensor contamination after the owner cleans and re-oils the filter, and a few cases of a high flow filter setting a check engine light just because of the flow difference.
A pull without any airfilters? What would the figures be then?
Old news. The oiled cloth clogs with dirt 10-20 times faster than quality paper filter. After 300-500 km the sport filter is clogged, and the paper is still new.
http://penkiller.com/index.php/topic,2130.msg15585.html#msg15585
The guys whi did the extensive test: http://nicoclub.com/archives/kn-vs-oem-filter.html
Dit you guys reset adaptive values before every test?
Can’t beat wrapping a pair of women’s tights around the intake box with no filter !
k&n arent worth it stopped buying them years ago the dont stand by their lifetime warranty , had one on my 1997 jetta tdi ,for a few years and the metal rods built into the rubber rusted and the filter was worthless , ,and no they didnt stand behind their warranty since the place i bought it from when out of business , save your money and just buy regular filter s