K&N Air Filters

Interesting question. I was always under the impression that since trucks are turbo charged they always get enough air, unlike regular cars. I know when I was in school we were taught that air filters don't start to hurt performance in big trucks until you reached around 20 inches of water of restriction and they recommend a filter change at 25 inches. Won't hurt to try!

 

Fleet air filters makes foam type.Ive been running one for 2 yrs and am very happy with it .turbos spin up faster and engine is just happier. silicon (dirt ) in oil samples went down a little so its filtering better than paper type. they claim an mpg increase but I nor 4 others I know saw any. not cheap # 325.00 to my door but just clean and re oil every 100k and keep running it. guaranteed for 1 million miles. IMO money well spent, I would buy again .

 

PaulE. that $325 is that for one or a pair? I have seen them on the web for a while.. red an article in Movin out bout em... an saw em at antrim"s last dnyo day but forgot to ask about them, got caught up in all the fun... I had heard that some reported higher silicon levels with them.. but that info was second hand.... Nice to hear from someone who was used em

 

that price is for 1. of the 4 guys i know useing them only 1 does oil samples.his silicon level also dropped a little. been hoping to get to Antrim to dyno mine but dont run the area anymore.talked with owner on phone seems like a good guy.how is he to deal with ?

 

Cant say I know the answer for big trucks specifically. But, I will tell you that a quick Google search for K&N air filter for diesel engine (specifically the Ford Powerstroke) will be a real eye opener. A lot of the guys consider K&N DEATH for the powerstroke motor.

Personally I would never put one in a $$$$$ diesel engine myself. Way to easy to damage it while washing it. I caught a service tech blowing 100PSI plus of shop air through my "washable" air filter on my pickup truck. I raised such a stink with that shop they agreed to purchase me a new element.

 

PaulE.. There real easy to get on with.. nice people, always been honest with me... easier to deal with in person than on phone, shop is always packed... As far as there dyno goes i belive they still just charge by the hour after a hook up fee .. they"ll make adjustments right on dnyo if ya like.... Told me they would leave it strapped down all day if i wanted to play.... Ever thought about commin to a "dyno day" its a lotta fun if your into that stuff.. And dont scared to run if you dont have a big hammer either... there are also stockers there just to save a couple of $.. they dont mind. Lots of fun even though my truck dissapointed... smoked a 2250lb lipe when the power turned on ... just couldnt hold that much.. still did pretty well in the class ( e cats ) all things considered.....

 

I don't like oiled filters on turbocharged engines because they pull so much air it sucks the oil right out of the filter. I had an AFE on my pickup with twin turbos and the compressor blades of both chargers and the inside of all the piping were coated with nasty oily goo. Of course the 90psi of boost might have something to do with it also but either way it's now cleaning the air in a landfill.

 

Your back to a paper element filter then? BHAF?