Is it worth spending the $40 for a K&N air filter. What will I gain/loss on my 98 SE? My main interest is fuel economy!

 

Minimal difference on the K&N. If you want fuel economy, try a y-pipe. Should help a smidge.

 

Fuel Economy!!!??? Come on, where is the love? Get CAI with full exhaust, AND Get a Supercharger!


I doubt a K&N would increase gas milage, but if your filter is clogged/dirty then you might as well get the K&N, they are reuseable.

 

Cat-back = sound, no perf. gains or fuel economy.

 

Fuel Economy? Should have gotten a Geo Metro .
Doesn't the K+N Air Filter offer better air flow and you don't have to clean it as often as the stock filter?

 

I WANT my car to be so powerfull that I only got10MPG...

 

aahh, generally you dont clean stock filters, just throw them out, if thats what you mean.


There's no real dyno gains with a K&N.

 

I have that with my current setup. Bad Knock Sensor, both front 02 Sensors...

 

Yah thats what i meant.

 

I drive a 100 miles a day back & forth to work. MPG is real impotant with gas at almost $2 a gal, my car is stock and is only getting about 27mpg hiway. Light foot 60-70 mph

 

Only getting!Dont complain ! I get 24 and i drive 50 miles /day at $2.27/gal.

 

Should get 29 mpg

 

i have the fitler, purely for audio purposes, I may have lost on a the low end from 2k-3k rpm but at least it sounds good!

 

They air filter makes the car sound different? Get out!

 

makes no sense

 

sure why not

 

Will the K&N filter offer a better air flow, which will increase gains for the ypipe?

 

nevermind.. but how can the K&N make you lose??

 

i installed the k&n simply because paying 35 bucks and having a product for the life of your car is far better than paying 10-15 bucks for a paper filter every 10-15k miles or so. That was my logic.

 

Wait until all that oil in the K&N gets sucked into your Throttle body and causes !%^#$%@#

 

I've never heard of that happening in a properly oiled filter. When I clean/reoil mine I let it sit overnight and let all excess oil drain. Has anyone heard oil from filters going into the TB?

 

I was using a K&N for over 155k miles. It just got too ragged after so long, so I recently replaced it with a Fram AirHog.

Also, I got 32mpg on my last highway tank. 2400rpm (68 mph) locked in the whole way.

 

You said it "properly oiled". K&N is fine for high rpm racing applications, but over time if you overoil the filter you can cause dirt buildup in the throttle body. Hell, racers rebuilt the motor after a few races anyway!

 

Says who? EPA?

 

How do you like the air hog? Can you use the K&N recharge kit with it?

 

The airhog is exactly like the K&N (well, actually, it seems to fit the airbox better), except it's orange and the pleats run short-ways instead of long-ways.

There is an airhog specific recharge, it costs the same as K&N. But, they are both cotton gauze/wire mesh filters so I dont see why you couldnt use either cleaner for either filter. I used the K&N kit on the no-name autozone cone filter I had for a while.

 

I already have a K&N recharge kit- that is why I was wondering.

 

Actually EPA says 22/27 5 speed and 21/28 auto. You mileage may vary depending on your right foot!!

 

You might see a a 1% boost in fuel economy with a K&N. Better to get a CAI or at least Stillen + K&N intake. You will see maybe 2% gain. The sound is great with a free breathing manifold too. If you drive 100 miles 5 days per week, in one year year you will save $18.34 at a 1% increase in fuel economy.

 

I got 27.47 on my last tank of mostly city commuting (65%) with the remainder at highway speeds.