has anyone used the k&n air filter in there trucks and if so have you notice any gains in gas mileage or anything. i have done the air box mod and put 1 in and notice my truck is louder but so far thats it lol. any feed back?

 

its louder because you took your silencer out and the k&n has more air flow. they say you get a little better mileage maybe 1 mpg or something.

 

Exactly, you may gain half a MPG or so but is going to be very minimal, and the increased airflow will allow your engine to breathe and hence sound a bit louder.

A full CAI/Intake will give you a noticeable amount of sound and flow increase, but still maybe 1mpg better

 

ok i figured the more airflow being the sound difference since i did the air box mod. well i'll take all the mpg i can gain lol.

 

have you some photos available about the air box for the kn

 

So an air filter makes your truck sound louder...even if you still have a stock exhaust?

 

You won't get any performance or MPG increase with the K&N. Here is a
truly independent dyno test of the K&N:

http://www.jackphelps.com/ranger/knfilter.htm


The OEM paper filter will flow more air than a N/A 3.0L can pull. Matter of fact, the same sized filter is used on the 4.0L!!! If the OEM paper filter
wasn't capable of flowing more air than the 3.0L can pull, the K&N would flow more air. If you hold the K&N up to the sunlight, you will see holes in the filter media.So, the only thing the K&N will flow more than the OEM paper filter is dirt and oil. So you risk a contaminated MAF sensor, and a dirty sticky IAC valve, and throttle body.

One other point, louder doesn't mean more air flow, it means more air turbulence!!

I'm sorry to hear you have thrown your money away....

 

i bought one for my truck right after i bought it... i cleaned it once about 25k ago... i didn't notice and difference in performance at all... however im not gonna switch back to the old paper filters since this one seems to be working just fine

 

A conical style filter is superior to a box-type not to mention the inlet tubing is a solid piece of plastic not ribbed rubber.

There is a joke in there somewhere . . .

 

Bump

 

I didn't notice any gain or loss in MPG with the 4.0L. Look at the plastic intake tube...it is NOT ribbed either, but rather smooth. Ribbed externally, good flow internally. Mine also came with a stock conical paper filter. Not all Rangers are rectangular-shaped, TylerCrawford.

Sidenote: Have you actually calculated the surface area of a conical vs. rectangular filter? What engine and air requirements are necessary for the filter? Different sizes and engines vary, and a rectangular piece may already allow/supply more air than is required for the engine. Conical doesn't mean better. However, conical filters do have a larger surface area for the amount of material and dimensions than rectangular.

Don't expect a huge increase in hp or tq with a K&N.

 

I am not worried about it Just by his posts, you can tell he is looking for an argument . . .

 

No, not looking for an agrument! I just have a pet peve about useless peformance mods, which K&N air filters, and intakes fall into. I want to
make sure young people don't throw away the little money they have on
useless performance mods!!

It is good to see there are a few honest people, that admit that these
performance mods have made no difference in performance, as expected!!

 

i actually didnt pay for it. my buddy was trading in his 4.0 4x4 and said hey wanna trade filters its like brand new i said ok.

 

Just one other point about K&N filters. Not only do they not offer any performance advantage, they have to potential to do damage from the
dirt and oil they pass. Like contaminating the MAF sensor, gumming
up the IAC valve & throttle body, and causing excessive engine wear.

About the only thing I can say positive about them, there may be a very
slight performance advantage to WWR (Wallet Weight Reduction)

 

Who cares?

 

People smart enough to care for their vehicles!!

Do you have any more intelligent questions???

 

What about the dyno charts that K&N has? I do care for my vehicle very well thank you.

http://www.kandn.com/dynocharts/57-2560.pdf

 

The few cars that I have personal experience with all have benefitted from a conical replacement filter and matching aluminum/plastic intake tube.

Specifically my 1988 CRX SI gained 2 MPG with a cheap EBAY one and a good friend of mine gained 3 MPG on his 1996 Dakota 3.9v6 with a K&N one.

Chassis dynos can be made to read whatever you want.

You can inflate tires, set the air meter in a different room etc. There are many variables and the big one I have with your dyno graph is the time between pulls. I have seen heat soak LOWER horsepower by 15rwhp on a 2005 Charger srt8 personally.

We made 10 pulls in an hour, got the air/fuel and timing where we wanted it and let it sit overnight. The next morning the guy came to pick up the car and we made one more pull and it made 15rwhp and 8ft-lbs more just by sitting for 12 hours.

 

I wasnt sure if the dyno was really true or not, I was just posting it for reference. Anywho, yeah I haven't had problems with my K&N FIPK, however I clean the MAF each time I change the oil with MAF cleaner just for insurance. I like the sound it gives to!

 

I noticed a little gain in both categories. Millions of people use K&N so I would say they are a pretty good filter.

 

At the ned of the day i also enjoy the added sound (along with the exhaust). So honostly even if it gives me Zero more mph and Zero hp i like it for the sound =p