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Although I use a K&N filter, I don't believe a 17HP increase, at least not with a stock air intake and exhaust system.Steve
K&N filters are not really about increasing power, they're about maintaining very close to original airflow much longer than dry paper filters as they get dirty.Steve
...The only reason we haven't jumped on an XV yet is that it is pretty anemic in the engine department. Both my wife and I love driving both our cars because they're both stick shift and relatively fun. It's getting really difficult to find a new car that has a fun engine with a stick shift. "Champagne problems."
Huh? There are plenty out there.All of the major manufacturers still have fun cars with manual transmissions. Honda Civic Si, pretty much anything VW, BMW, Audi, Mustangs, Camaros, Vettes, the list goes on and on.
Paper filters get dirty then are replaced. Metal mesh filters require maintenance in the form of cleaning and re-oiling with special filter oil. Two filters, A = paper, B = metal mesh. Exact same air flows through both filters, exact same dirt. The dirt blockage of air flow is exactly the same in A and B, no different. A professional BMW (Bimmer, not Beemer, look up the difference) mechanic said oily particles can possibly detach from metal mesh filters, thus fouling fuel injectors. I suspect OEM prefer paper air filter over metal mesh air filters because it's more sensible to periodically replace a filter rather than perform maintenance and risk fouling injectors. A dirty paper filter simply slows air flow and minimizes power. An overly dry (needs oil) and/or dirty metal mesh filter also slows air flow and minimizes power, but adds risk of fouling injectors. It's a net negative IMO. If time is money (it is), and the cleaning fluid and special oil and the metal mesh filter itself is costly, an OEM paper filter might be more cost effective. I'd check if warranty mentions anything Re. metal mesh air filter. Clean paper vs. clean/oiled metal mesh filter result in the same power IMO.
I suppose one could argue that the oil in the gauze could foul a spark plug, but in all honesty the amount of oil that could be potentially induced via filter pales in comparison to what gets by rings and valve guide seals.
The only reason we haven't jumped on an XV yet is that it is pretty anemic in the engine department.
Both my wife and I love driving both our cars because they're both stick shift and relatively fun. It's getting really difficult to find a new car that has a fun engine with a stick shift. "Champagne problems."
The air filter oil has been known to have negative effects on the mass air flow sensor element. The oil can accumulate on the sensor element. Not a big deal if you go in and clean it on regular intervals.