I'd like to see one with a AMS oil dry filter... The oiled (like K&N) are bad for MAF sensors when they get over oiled and always seem to dust the intake tube, Id rather have better flow than stock, with same quality of filtration as stock.. I believe the Injen intake has a dry but cleanable filter. Thats my only concern. I want to protect this little motor its gonna have some hard mines on it.
"Oil is better flowing but does not filter as well as there dry filter. IE Oil = HP and Dry = cleaner air to the motor."
"In a stock car the difference is about 1-2HP. With a supercharger the difference can become more noticeable."
"The dry filter requires less steps to clean due to not oiling the filter and has no chance of fouling the MAF sensor. Which there is not a huge chance of happening if an oiled filter is properly cleaned."
""Wet vs Dry"
The dirt released from the filter comes from cleaning the oil off, which the dust clings to. It's the "release agent". A dry filter is put in a bucket and agitated. You will get the surface dirt out but not the deep dirt. So each washing leaves the filter less efficient that it was new. Think vacuum cleaner filters. It will never be 100% efficient again, a oiled gauze filter is. Again it's Flow vs Filtration. Dry filters have come into vogue due to the great "Oil on Mass AF sensor" debate. Foam filters are synthetic not natural fiber. Oil will not penetrate the foam, it sticks to it. Foam filter manf use a thicker sticky oil to cling, but it WILL shed off. Did we use foam for years on powersports and trucks? Yes, when they were carburated and the motor wasn't affected by ingesting a little oil.
MAF Fouling. (urban myth?)
Oiled Mass Air sensors is pretty much an urban myth. Check out the K&N website for the actual scientific testing they had done.
http://www.knfilters.com/MAF/MAFTestresults.htm
A lot of dealers make a big deal about this because they've been scared into it by the warranty techs. Keep this in mind. A GM dealership has NO way to test a mass air flow sensor. The book tells them to put the MAF on a same year vehicle to see if it's bad. !!
Can it happen? Sure. From over oiling. If a cheap offshore filter has oil on the inside of the bag wrapping the filter than it's over oiled. Don't use it. The biggest culprit is the owner reoiling the filter after cleaning. Ever read the instructions before doing it? You oil a small area and let it wick thru the filter for 30 min. You DO NOT try to get the cotton all red in 30 seconds
Several manufacturers now list the amount of oil they put on their filters from the factory. It's done by a computerized sprayer. The amount averages 0.6 oz. Very little.
Current manufacturers of filter (vs re-packers) spent a lot of time and engineering to get the correct configuration to achieve the best Flow vs Filtration AND correct MAF air signal. Number of pleats per inch, pleat depth, all play apart in "straightening the air" as well as filtration. This is an area that very few kit builders (vs filter manf) spend any time. It's usually what fits in the space. IMO it's very important to know who's filter a kit has in it. Did they cut corners there?
There are lots of hype, myths and legends out there on the errornet. Also some facts. Do your research from multiple sources."
"The biggest difference in maintenance. The dry flow filters that many company's produce now, will not require any cleaning at all , while still maintaining a very high filtration rate. This is by far the single biggest advantage, because we all know how the dirt and grim clogs the pores on a oil filter, an then requires cleaning, and the oil solution. "
I googled that.
-Eric Smit