SneakyFish wrote:how bad is it if i oil a dry filter?
It's not good that for sure. The material in a dry filter won't absorb the oil and it can get into you intake tube and coat you MAS. If enough oil gets on the sensor, you have everything from misfires to a stalling engine and in time, the MAS will have to be replaced. (not a warrentee item)
My AEM intake has the dry filter and it just need the AEM "soap" bath, a cold-water rinse and air dry ... done.
The color of the filter does not determine if it's an oil or dry system. There are red and blue oiled filters - it's all determined by the kind of oil that each system uses. My dry system is more grey then anything.