exactly how much are fram air filters??? i havent seen em myself

 

The Airhogs go for $35-$55 depending upon vehicle application, same as the K&N filter.

 

Not sure about the air hogs, but I got a K&N filter in my 94 F150.On Summit Racing's website, K&N claims up to 15hp gain with the filter ($40) and up to 19hp with the whole kit($200+). At $5 a piece, for paper filters, the lifetime filter will pay for itself if you keep the truck for a few years, but $200 for approx. 4 more hp than the filter alone doesn't seem worth fooling with the kit.

Building your own custom air box sounds cool, and shouldn't be difficult. If you're gonna do it, I'd get consider some alluminum pipe, and fabricate your own "cold air tube" from the box to the intake. Let us know how it works out, good luck.


Later

 

Count me among those who cry "bah, humbug" on this one. I don't even believe the K&N claims of 15 HP...50 HP from a more porous air filter?!

You could take OFF the air filter, take OFF the housing...take off the HOOD for that matter...and you might -- MIGHT -- get 5-10 HP more if the OEM design was really bad. Claims of 50 HP are simply out of bounds -- there just isn't that kind of power being taken away in the first place.

Anyone who doubts this might benefit from a little study of fluid dynamics. Skipping the boring technical stuff, it's downright remarkable how much "stuff" (the air) can fit through such a small hole. Those who wish to test this at home may wait until next winter, and leave two windows on opposing sides of their house open, say, 1" or so. You'll believe.

 

Wow, how sarcastic does FORD352V8 have to get before people realize he is joking. Anyways, blueoval65 is right about a custom air box. I have done that with my 93 Ranger. You can see it in my gallery. The box is nothing more than cardboard with fiberglass pipe insulation and metallic tape. The intake tube is the stock tube, cut and pieced back together to draw from the front of the engine bay, instead of the back, also wrapped in insulation and the metalic tape. The filter is from Kurtz Kustomz, and was $90 for the cone filter and adapter to the MAF sensor. This summer I plan to do away with current tube and fab up my own with some PVC. There are lots of ways to do an intake. The washable ones are worth it if you plan to keep your vehicle for a few years but won't gain all that much power in most applications. A whole Cold Air intake is the best as far as performance, but takes a bit of work. Between my intake, chip, and exhaust I have increased my mileageby 3 MPG. I can get 24 on non-interstate highways going 63, up from 21. I get about 19.5 on the interstate doing 75, up from about 18. In twon I can get 17 up from 15.

 

Even on the drag strip running without a filter you only gain 10-15 HP max, and that is stretching it. I could see gaining 50 hp with some sort of exhaust modifications and different injectors..... it all works together you know...

I had a 91 mazda B2600i 4X4 and i installed a K&N RR-3001 filter on it(it was one of those cones with the inverted cone in the tip) and i did notice an increase in fuel economy...

 

The ranger story has broke the needle in my BS o-meter.

 

I don't know if I buy the whole lifetime filter thing myself. Seems to me they could just be saying that to help justify the high price. I could see paying maybe twice as much but not 10x as much, so I have never bought one. I would rather have 10 brand new cheapo filters than 1 expensive filter that may or may not be able to be completely cleaned to new condition.

 

It will last the lifetime of your engine, cause it drasticly reduces it's life with all the extra crap it lets in. The way I see it, bigger filters flow better, so buy a big paper filter, and change and throw away as needed.

 

whats the diff between a k&nand an air hog or is there.....

 

about $5

 

Is that 4-banger out of an Indy car perhaps?

 

I'll stick with K&N for now. I was going to try one of the AirHogs when they were first released, but they are not any less expensive than K&N. I thought the FRAM name meant they would put out a lower priced comparable product to K&N, but was just totally caught off gaurd when the Oreillys sales person told me the costs are basically the same as K&N. Now, someone correct me if I'm wrong, but I thought having multiple brands of reusable airfilters would cause the prices to come down. But that is not the case with either brand.

 

I shouldn't be so hard. Both the airhogg and K&N are comparable filters. they both flow about the same and cost about the same. I guese if you a fan of fram oil filters you would by there air filter and vice versa with K&N. As far as how much extra dirt they let it and the effect on engine longevity is up in the air. I suspect if they effected engine life serverly that there would be some media or lawsuits. Rcaers can get away with the extra wear cause they constantly tear down and rebuild there race engines and they grasp for all the extra hp they can get so K&N's make sense for them. Just don't know how they would fit into my life but you never know. I ounce hated Holley carbs and after learning a bit about them I have actualty come to prefer them. Go figure. Thanx

 

I dont know if your truck air box is set up like mine. But if you undo the air box from the air intake hose the air box will pop out and you may be able to get the air muffler off the box. The hole in the box were the muffler is about the same size as the air intake hose. Any more holes or any bigger will not do any good becouse the truck will only take in the air the needed. I did it and had the trucks air intake flow tested and found hardly any change in air flow between K&N cool air intake and stock air intake with the air muffler taken out with K&N filter. There was a 14%+/- hp increese, mileage got about 1.5+/- mpg more too. Got to love the dinos.