I emailed K&N about the specs for this drop-in filter. They responded that it is capable of 1280 CFM at 1.5"/H20. That sounds really good considering that the 2846 Napa Gold that I run is rated at 675 CFM.

 

I know it's already a done deal with you modding your air box, but I thought about taking some temperture readings before (stock box) and readings after (modded box) before I mod mine. I have not tried it, but I have a digital indoor/outdoor temperture gauge in which the outdoor part is the wireless type remote (small in size). Looks like you could just stick it in the bottom of the air box under the filter, seal up the lid and go for a ride and check the temp readings. I would be curious to know the temp difference between the two.

Tony

 

Tony, please post your findings when you're done. I'd be interested in the results as well.

It would also be nice if a temp reading could be done where the air enters the engine. That's the result I'd really like to see. I'm wondering if by the time the warmer air goes through the intercooler, it ends up being nearly the same in the end.

 

I've seen some discussions where it was said that the oil used on K&N filters can get sucked into the intake tract and affect some of the sensors by coating them!

Personally, I have the Amsoil filter in an unmodified air box.

 

That's true, but most likely by over-oiling the filter after a routine cleaning. It's personally never happened to me.

 

This morning I tried the wireless remote in the stock air box. Starting out outside temperture was 49*F. After cranking the truck and setting there a minute or two the reading on the remote showed 53*F.

Once I made my 1 mile drive through town to the highway and got on the highway temperture dropped back down to 49.6*F. I continued on a 8 mile trip to another town and pulled up to a stop light an the temperture reading showed 50.1*F when stopped at the light.

Continued on through this town at 35 to 40 mph and stopped at a store, shut truck off and set there roughly two to three minutes watching temperture increase to 52.3*F setting with truck shut off. I stayed in the store roughly 30 minutes and when I returned to crank up temperture on the remote read 53.9*F I left the parking lot went less than a mile to another store and stopped, temperture read 53.4*F.

I stayed at that store roughly 15 minutes and when leaving the parking lot temperture reading showed 55.4*F,while going back through town at 35 to 40mph temperture increased to 57*F and outside temperture on overhead console showed 57*F.

Once through town at the 40mph speed limit I was able to increase speed to 60mph and the temperture reading on remote dropped to 55*F and continued to stay there for the eight mile trip back. Overhead console still showing 57*F.

When I came to the stop light where I turn and stopped the overhead console read 55*F along with the remote sensor showing 55*F staying that way until my driveway. Shut the truck off and watched the temperture on the remote increase to 60*F after setting there a minute or two.

Actually my temperture findings surprised me because I thought the tempertures would be higher with the confinement of a stock box. Very close to outside temperture readings in my case. I guess that plastic air box retains the heat from the engine with confinement of a hood being closed better than I though.

Lark if possible take some temperture readings on your modded box I would be curious to know if more engine heat is being drawn in on your mod or not.

Tony

 

ive heard the K&N's are bad....... is there any actual documented report of a K&N letting in particles big enough that led to a destroyed engine? Thanks

 

Tony, I didn't take the time to write a thesis such as yours, but I did install my Attitude today and turned on the display for inlet air temp. Going down the highway it would average about 15 degrees warmer than the outside air. Since the air going into the intercooler is 500 degrees, I can live with a 15 degree difference. Of course, come summer time I would expect an even larger difference, but still within reason once the truck is moving.

Can anyone with a stock airbox tell me what your Edge Attitude is reading (temp wise) while cruising down the highway compared to outside temp?

 

[QUOTE=Lark;1366042]Tony, I didn't take the time to write a thesis such as yours, QUOTE]

Yes! it was a little lengthy wasn't it, I should of been a PI and charged for that info. Thanks

Tony

 

Outsided temp was 85, stock intake air was between 95 to 105 depending on how fast I was moving. That's with a completely stock intake and filter.

 

Perfect - thanks! I had a feeling my airbox modification did not significantly raise the intake temps.

 

The other problem you could have with that design would be the warmer under hood temps from the engine getting into it. It is always better to have cold air going into the air filter. I did the 4" hole in the bottom and the dryer hose with amsoil filter on mine. Did it help the mpg. Maybe 1. I think some of these things we try and get a little more out of. Are pretty much a waist of time. There is a lot to be said about stock. In the long run stock is the way to go.

 

Yea, the intake was taking hot air from the road and tires instead of the engine. I think the only difference will be sitting idle versus moving. If you are sitting idle, the heat gain would be greater because the fan isn't moving enough air with the gutted box, but once you are moving and get good airflow over the engine, I don't imagine that it matters much.

 

Interesting mod. What happened to your exhaust in the background?

 

interesting.