Updated to a BHAF from Napa today. Had some free time this morning and I changed my oil and while sitting around, checked my K&N airfilter. Sometime last night I guess (hope) some birds got into my air box (lots of extra holes in it) and started to build a nest, probably had about half the airbox full of stuff. Even worse, they also decided to peck a dang hole in filter. Oh well, had to upgrade to a BHAF. Since I work for a company that buys alot of stuff from the local Napa, I got a 50% discount on my filter, knocked it down to only $34 dollars. Not to bad I guess. Can I expect any improvement from the BHAF over my old K&N?

 

You bet!! I got a mpg better and a egt drop.. It may have helped power to. Number 1 is it sounds cool..

 

My K&N was thrown out and I went back to the Fleetguard stocker type. K&N's work great in all of my gassers but don't do squat for my diesel. BHAF is the solution.

 

Or a scotty.

 

texasaggie2005

K&N definitely isnt the best choice on a Cummins anyway. Get yourself an Outerwares prefilter and your BHAF will last for a very long time.

http://www.outerwearsracing.com/

 

I ended up pop riveting some 1/4'' hardware cloth over the inlet to my stock air box. Had mice do the same thing to my filter as the birds did to yours. Plus they stuffed the box full of the insulation from under the hood. Truck didn't run well at all.

 

What wrong with a K&N? What did I miss now?

 

Yeah, what did we miss?

 

I think you should get them to warranty it.
Just kidding of course. Its mouse season here and they start looking for places...I better take defensive measures before I see them spinning in the shaker hood filters.

 

Some people claim the K&Ns don't filter adequately but it most often can be attributed to poor servicing and installation habits. Read and follow K&Ns instructions to a T and you'll have no problem.

 

yeah most of the problems are with improper servicing......

BUT, K&N's do tend to let a lot of crap through and they dont fit the stock airbox very well. JMO.

 

I missed out on the K&N stuff too, and now, what is BHAF???? Excuse the ignorance but I admit I'm new. Had the truck for 6 years and just getting here. I'm reading as much as I can

 

BHAF= Big Honkin' Air Filter

As in this-



Specs for the NAPA 2790 filter-

Style: Air Filter
Height (Inches): 11.88
Height (mm): 301.75mm
Top O.D. (Inches): 10.5
Top O.D. (mm): 266.70mm
Bottom O.D. (Inches): 10.5
Bottom O.D. (mm): 266.7mm
Top I.D. (Inches): Closed
Top I.D. (mm): Closed
Bottom I.D. (Inches): 4
Bottom I.D. (mm): 101.60mm

https://dynamic.donaldson.com/webc/W...072&item=14142

 

or installed with an outerwears.




phox

 

are you all serious you put that big huge air filter under your hood??? Is it really worth that?? Performance increase?? It looks like it barely fits