http://www.velocityap.com/Aston-Mart...l-amfilter.htm

Have these in stock, our own VelocityAP products. For what it's worth, I have been selling this style of filter for just about 10 years, and to date I have not had a single instance of a contaminated MAF sensor.

In my experience and opinion, the instances of MAF fouling can all be traced to cleaning of the filter and over-exuberant re-oiling. The best way to clean the Oil/Cotton matrix filters is to use compressed air and blow them out.

These have been proven to be effective and MAF safe.