All:

I am thinking about adding a K&N air filter to my '01 GS300; will I see any improvement in horsepower and/or mileage?

Thank you,

Michael Tschirret

 

Why not search first then ask?

 

yes u will see improvement in everything

 

i had them... beside the car getting more noise, didnt feel/see any improvement.

 

I've read on here that the oil used to recharge the filter can mess up the MAF.

 

That is due to folks using way to much oil on the filter. Follow directions as listed by K&N and you'll be fine. No improvements will be noticeable with a drop in filter replacement.

 

i expect more from you thomas....u failed at reading them. lol as measured says its from people over oiling their filter. i have run my k&n drop in for about 3-4 years and not once have i ever had a issue. i will be moving on from it this week as i finally bought my SRT intake. also as measured says you dont see any real improvements....my MPG flickered a tad but nothing i could for sure attribute to the filter

 

i think search on this topic, both sides of this topic have already been discussed...

 

only time you will see an improvement is if your old original filter was clogged over 80-95% and then switching to a new filter. K&N or not the way we drive our vehicles in normal day to day conditions i doubt well notice a change. im not saying there isnt any improvement, but something you can "feel" no. youll only save $ in the long run from buying filter after filter depending on how often you maintenance it. if you are an **** type like myself i clean/reoil/clean maf on every oil/filter change. the $ saved will be worth the 60$'s spent originally.

 

K&N's response to oil from the filter causing MAF problems.

http://www.knfilters.com/maf/maftestresults.htm

 

This thread is a year ago.

 

i got my K&N filter for sale. used for 3000 miles.
i switched over to a HKS filter thats why.
let me know

 

I've had the K&N drop in air filter for years. No problems whatsoever. Minimal increase in noise and performance, if any.

To me, its just a rechargeable air filter that doesn't have to be replaced. I just clean it every now and then with the re-charger kit and its good to go. The recharger kit can last you 3-4-5 recharges depending on how liberally you clean it. Pretty decent savings. Just go easy on the oil like everybody else says. If you really are OCD, you can also use MAF air sensor spray and spray your MAF metal connectors ocassionally.

 

The answer to the ops question is NO!

Do a google search. The purpose of an air filter is to filter air not to create noise and an illusion of power.

 

If I ever did a K&N again it is primarily for just that, reusable. I drive a LOT of miles, so $20 for a paper filer every 30k miles vs $50 for a K&N does pay for itself in less than 90k miles.

I typically don't change the filter till it is dirty and I periodially blow the filter out with compressed air, gives it a lot longer life.