I was wondering what is the best type of air filter to run. Currently im using fram but want to try K&N, my friend Jay told me he uses STP and that they are great air filters.. Im just curious and wondering what you all are using.

 

none at the moment, i had mini cone filters on my weber horns, but they were WAY to restrictive

 

I use the foam one from RB, although I have the RB intake.

 

I use K&N, but it is my understanding that with my stock nikki, it basically doesn't matter what kind of filter I'm running just as long as it isn't clogged. At least I can get away with not having to buy a new filter and just clean the K&N.

 

I had a K&N, but got grew tired of maintaining it (washing and re-oiling), so last time it needed cleaning I replaced it with a cheapo Fram or STP. I didn't notice any difference and I use a stock Nikki (on my 12A) with all the emissions rats nest / air pump intact.

 

I'm going to try the RB foam filter inside a stock filter canister on the RX-4. I bet it'll make an oily mess in there.

 

right now im using a ramflo, but thats on my weber 45...

 

i did the K&N cone mod.

 

i have run K&N on every car i have had i love them....they really arent hard to clean and dont really need to be cleaned that often

 

I'm running the RB power pulse setup now.

 

I just got a K&N last week and noticed a small difference right away... not so much in power but in gas mileage.

To be fair however, my old disposable filter was pretty dirty and the cause of much bad mileage.

 

just like my MOM!! OHHHHH, PWN3D!

 

K&N filter....I seem to remember doing my own back-to-back dyno runs and picking up 3 HP at the wheels....test was done with new Fram vs. cleaned-and-oiled K&N...

 

Ahhh see! Thats what i wanted to hear results! Well if it gives me an extra 3hp and 3 mpg heck i will buy one!

 

In other threads I have heard exactly the opposite that the k&n filter actually makes you lose power over a paper filter for some reason... Search, I found this topic confusing as to why...

 

K&N makes a GREAT filter. . . for my Buick.

As for the RX7, I've found the STP (grey box) filter to be more effective.

 

This ain't butt dyno talk...this was on a chassis dyno in Richardson, TX...



That was definitely documented, regarding mileage, but it wasn't a 3 mph gain...

Red Rex went from 15 - 15.5 mpg to 17.75 - 18.3x mpg with just the K&N filter change...

 

i had a K&N on the Dell and was very pleased. i'll be getting another one whenever i get my setup sorted out for the rebirth.