SRI or CAI - Toyota Yaris Forums

ChinoCharles · 04-26-2007, 12:18 PM

The whole debate about oiled filters screwing up MAF and MAP sensors is

.

Oiled filters are superior to dry filters. Period. Why do you think K&N has developed the reputation they have today? They developed the first oiled filters more than 30 years ago, and to this day it stands as an industry standard. The benefit oiled filters provide is simple. In a dry filter, particulate matter caught by the filter element is dispersed randomly. In other words, in a dry filter you will inevitibly have spots where dirt has saturated the filter to a point where that particular spot in the filter no longer breathes. Right next to that there may be a totally clean spot. This will eventually affect the flow through the filter and make it sporatic. In an oiled filter, dirt actually becomes an advantage! By saturating the filter element with oil, you are essentially adding a second filter to your car. As dirt builds up on the outside of the filter, it is attracted within the filter by the oil. The oil helps disperse this dirt evenly and this dirt in turn provides yet another matix of matter air has to pass through before entering your intake tubing... hence a second filter. When smaller particulate matter starts saturating an oiled filter and begins to close the gaps between larger dirt particles suspended in the oil, that is when you call an oiled filter clogged. Therefore, oiled filters go longer inbetween cleanings and filter better than dry filters. As far as oil getting into your MAF sensor... you're not talking about a cup of olive oil. As long as the oil is applied correctly you will see better results from an oiled filter.

Myth busted.

PetersRedYaris · 04-30-2007, 12:55 AM

Quote:

Originally Posted by ChinoCharles

As long as the oil is applied correctly you will see better results from an oiled filter. Myth busted.

Yep, Chino is correct. The problem is, when you service the filter and re-oil it, it takes a lot less oil than you think and most people will "over oil" it. This excess oil can be pulled through and coat the MAF sensor. It happened to me on my Tacoma; After a careful spray with electrical cleaner and re-setting the CEL, everything was fine.

Oiled filters are superior, as is a SRI for the Yaris (IMO).

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04-26-2007, 12:18 PM	#1
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	The whole debate about oiled filters screwing up MAF and MAP sensors is . Oiled filters are superior to dry filters. Period. Why do you think K&N has developed the reputation they have today? They developed the first oiled filters more than 30 years ago, and to this day it stands as an industry standard. The benefit oiled filters provide is simple. In a dry filter, particulate matter caught by the filter element is dispersed randomly. In other words, in a dry filter you will inevitibly have spots where dirt has saturated the filter to a point where that particular spot in the filter no longer breathes. Right next to that there may be a totally clean spot. This will eventually affect the flow through the filter and make it sporatic. In an oiled filter, dirt actually becomes an advantage! By saturating the filter element with oil, you are essentially adding a second filter to your car. As dirt builds up on the outside of the filter, it is attracted within the filter by the oil. The oil helps disperse this dirt evenly and this dirt in turn provides yet another matix of matter air has to pass through before entering your intake tubing... hence a second filter. When smaller particulate matter starts saturating an oiled filter and begins to close the gaps between larger dirt particles suspended in the oil, that is when you call an oiled filter clogged. Therefore, oiled filters go longer inbetween cleanings and filter better than dry filters. As far as oil getting into your MAF sensor... you're not talking about a cup of olive oil. As long as the oil is applied correctly you will see better results from an oiled filter. Myth busted.