Dyno results for K&N filter?

[enganear]

Has anyone dyno'd a K&N filter installed on a stock engine? From looking at the stock paper filter element, I would wager that half the improvement seen from CAI mods is due to the less restrictive filter element alone. I have ordered a stock air box K&N for $42 shipped and will have it next week. I ran one on my 5.0 Mustang for 130k miles and only needed to clean it twice. IIRC, It was good for around 6-8 HP on the Mustang and air flow is comparable to the MS3.

The trick is keeping some overzealous service tech from throwing it away!
-enganear

DOH! I just found the Dyno thread and one sheet seems to confirm my hypothesis, but there are other variables....

 

[NCZ13]

i think any gains you feel will be a placebo. i believe the gains have more to do with air friction, than the filter element.

 

[desperado-c]

i think any gains you feel will be a placebo. i believe the gains have more to do with air friction, than the filter element.

Hunh? Please elaborate. I guess you mean the something about the design of the box which intentionally slows down the airflow?

 

[enganear]

i think any gains you feel will be a placebo. i believe the gains have more to do with air friction, than the filter element.

Check the dyno thread, the graphs do not agree with you. I saw similar results for the 5.0 Mustang which pulls about the same amount of air through its filter as the MS3. Mazda uses the same stock filter for the 2.3 and 2.0 NA engines and the MS3 moves over twice as much air as those engines. There are losses in the paper element that can be reduced with an oiled cotton element like the K&N. There are losses in the stock molded air tube that can be reduced with a properly formed CAI. There is value in knowing the significance of each modification.
-enganear

 

[NCZ13]

thats what im saying though. the molded piping of the stock piping, as well as the resonators result in high air friction. the flow isnt as smooth as it could be (like with a cai). all im saying is that putting a drop in wont amount to much in retrospect. theres still the baffling and resonators and the stock airtube the air has to travel through first.

if someone says omg i feel the car really movin with this drop in, its just a placebo. along the same lines of putting in iridiums and all that fancy jazz.

 

[desperado-c]

thats what im saying though. the molded piping of the stock piping, as well as the resonators result in high air friction. the flow isnt as smooth as it could be (like with a cai). all im saying is that putting a drop in wont amount to much in retrospect. theres still the baffling and resonators and the stock airtube the air has to travel through first.

if someone says omg i feel the car really movin with this drop in, its just a placebo. along the same lines of putting in iridiums and all that fancy jazz.

No resonators. Not a lot of baffling. Small intake inlet, though, going into a large box and presumably dropping the velocity substantially.

As far as the K&N, it's less restrictive b/c it's not filtering as much particulate. Might not have much consequence over the long haul, but it's definitely a trade off on some level.

 

[numbnuts22715]

thats what im saying though. the molded piping of the stock piping, as well as the resonators result in high air friction. the flow isnt as smooth as it could be (like with a cai). all im saying is that putting a drop in wont amount to much in retrospect. theres still the baffling and resonators and the stock airtube the air has to travel through first.

if someone says omg i feel the car really movin with this drop in, its just a placebo. along the same lines of putting in iridiums and all that fancy jazz.

The begi air box uses the stock piping and I made 18 whp and 26 torque from that.

 

[fourthmeal]

The K&N combined with a cut-up stock box makes a bit of power, somewhere just lower then CAI's and SRI's.