pete240z
pete240z SuperDork
10/7/11 9:03 a.m.

I have had discussions with a coworker as he swears these are the bomb. I have always just kept a clean filter and changed often.

Is there really an increase with the basic K&N air filter?

Show my your air filter love.......

Ranger50
Ranger50 Dork
10/7/11 9:14 a.m.

You mean you are supposed to change those things?????

I have a few K&N's around though... Take outs from doing used car inspections at the dealership...

N Sperlo
N Sperlo Dork
10/7/11 9:17 a.m.

Had a K&N attachment for my P71. You could hear the intake suck with the butterfly almost closing. Freaked people out a little. I miss that sound.

BTW: Calling this a canoe makes having our code word a bit moot. You just flagged your own thread as spam.

ReverendDexter
ReverendDexter SuperDork
10/7/11 9:25 a.m.

I run 'em, I like 'em. The butt-dyno swears up and down that there's a slight improvement on everything I've thrown one in other than the Cobra, and on that I did it to get rid of the horrid torture contraption that the stock air filter sat in.

iceracer
iceracer SuperDork
10/7/11 9:42 a.m.

Are we talking just about the filter as a replacement or their "cold air" intake ? Or both.

DuctTape&Bondo
DuctTape&Bondo Reader
10/7/11 10:19 a.m.

I have one on my IS300, it's a stock box drop in for a domestic truck which fits into my aftermarket intake setup (Area51) I keep an extra to swap in without having downtime. Love it and the fact that I can just wash and reuse vs filling up landfills. I use simple green/purple power and soak, works better than their designated filter cleaner.

I recently found a stock drop in replacement for my LS400 at the junkyard, washed it and just need to oil and install. $1 score!

Javelin
Javelin GRM+ Memberand SuperDork
10/7/11 11:29 a.m.

The drop-ins are great for daily drivers just so you don't have to buy new filters all of the time. Just clean, oil, and pop it back in. Some cars see a slight MPG increase from less restriction if the factory filters are badly designed.

The CAI's are where it's at though. The K&N FIPK kits are excellent as they use plastic tubes (light and heat resistant), come with heat shields/airboxes/hood seals, and have a much better flow. Our S/C Grand Prix Club guys consistently get ~10HP to the wheels, quicker ET's, and better MPG with them. The one on my P71 was excellent.

pete240z
pete240z SuperDork
10/7/11 11:43 a.m.
iceracer wrote: Are we talking just about the filter as a replacement or their "cold air" intake ? Or both.

I was looking at the drop in filter for $35 from amazon.com.

I would do the cold air intake when I have more miles on the car.

ultraclyde
ultraclyde HalfDork
10/7/11 2:34 p.m.

I've always run them and have always had the butt-dyno improvement. On the Mustang I swapped to an open cone, K&N type filter on a straight pipe. About time for the the first cleaning I started getting really odd RPM instability at idle. The oil from the filter had coated the MAF. Since then run an AEM Dryflow filter - same idea of less restriction but uses a proprietry material that flows and cleans like the K&N, but uses no oil. Just wash, dry and reuse. Been very hppy with it.

Javelin
Javelin GRM+ Memberand SuperDork
10/7/11 3:04 p.m.

Use the right amount of oil in the K&N and you won't have MAF issues.

ultraclyde
ultraclyde HalfDork
10/7/11 3:17 p.m.

I prefer to eliminate the possibility of error

Otto Maddox
Otto Maddox Dork
10/7/11 3:19 p.m.

I've used K&Ns. I like regular filters better. I don't like the oily mess. And in my cars, no discernable HP was added. And I too have heard of MAF problems.

iceracer
iceracer SuperDork
10/7/11 6:21 p.m.

As soon as one becomes available for my 2011 Fiesta ,I'll be getting one. I haven't checked yet, so they may be already.

wbjones
wbjones SuperDork
10/7/11 7:12 p.m.

the MAF problems come from too much oil... absolutely NO problems if you don't soak the thing... a very light coating and let it sit overnight ... put it in the next morning, and away you go

fasted58
fasted58 SuperDork
10/7/11 9:12 p.m.

been using K&Ns since late 70's, mostly bikes. Currently FIPK on '02 Silverado, no seat of the pants hp gains really felt but it do sound lots better through the intake. I'll do another FIPK or K&N on the next one.

No problem w/ MAF either, just don't go nuts w/ the filter oil treatment and you'll be fine

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