K&N Airfilters with a hotwire MAF
 

Will putting K&N filters on a car with a hot wire mass air flow sensor screw with the sensor? I heard the K&N's are oil based and will coat the MAF causing a LOSS in power, even damaging the MAF's in some cases..

Should I stay away, or is it fine?

http://www.knfilters.com/MAF/massairfindings.htm

although it IS published by K&N, it says it doesnt damage the MAF

You should consider a cost/ benefit ration.. a heated wire MAF replacement cost vs imagined horsepower / better sound worth to you.

before you install the kn clean off all the excess oil from the filter ,youl be surprised with how much u are able to wipe away with a lint free towel...also periodic cleaning (very gentle) of the maf is good insurance..It was a common prob on 5.0s causing irradic idle and hanging revs ,which had guys changinging out tuneup parts unnecesarily trying to solve such an ez prob..

It damages the MAF, ask any Nissan technician. Overtime the oil will coat the wires.

K&N are junk filters, either go AEM DryFlow or Apex'i.

Damages the MAF and +1 to Apex'i filter.

Lots of BMW owners are plagued with this problem until they swap out for the stock filter.