I've been looking for ways to boost MPG and the cars are in need of air filters.
I could get Fram Air Hogs (similar to K&N) for next to nothing with rebate.
Got a K&N in the 87 Supra and love it. So what have I got to loose?
Here'* what I've read about oiled cotton filters.
* The oils will get on the MAF and screw with the readings.
* You'll get better throttle response and sound but you may get PCM error codes.
* Mileage improvement is questionable and it needs recharging every 18 months.

Anyone running K&N'* or Air Hogs?

i have a drop in k&n. one in my buick and one in my olds. ive never had any maf issues. i think you would have to put way too much oil for that to be an issue. a light coating is all thats needed.

as far as performance or mpg, ehh cant really tell. personally i like the k&n better bc you get a lifetime warranty, and i have more faith in them than fram.

I use a KN drop in. It hasn't been serviced yet because I haven't reached their service interval yet but I havent had any problems.

Like Wes said, I have more faith in KN, they've been around for a long time while the Fram Airhog is still too new for me.

ive used a drop in k&n in my 92 olds, "FIPK II" cold air on my '97 fireturd, and currently have an intense FWI with the K&N bigarse cone it comes with. never had any problems. saw definite performance improvement with the intakes, slight improvement on the drop in. i think its worth it just because you dont have to keep on buying new air filters.

I used to run a k/n drop in one of my cars before, never noticed any real difference in MPG or power, i ended up going back to a decent paper puroilator filter.

Personally I would not waste the money, but thats just my .02 cents.

My experience has been that drop-ins in general aren't going to give you any real gains. On almost every car I've seen, it'* the actual tubing to and from the air-filter box that are the major restriction. But the cone types do give some nice improvements.

My Duster saw about a 3hp gain going to a cone right on the throttle body, plus about a 1mpg gain as well. I had a Dreamspeed CAI on my old Avenger, and gained a real 5hp with that, but no MPG increase. My Grand Voyager gained at least 1.5MPG with a short tube and a cone, and made a noticable gain in high-RPM power.

Got one in wifeys SSei. Noticed a difference at first, probably due to the paper filter that was in it being quite dirty. I like the fact that I can clean it and put it back in.

I just use Fram air filters in all our cars. Good value at $8, IMO.

I usually use Purolator air filters but I guess you can't beat Free so its worth a try to go with the Air Hog, theres nothing to loose.