After i put a K&N cold air kit i noticed a grunt like noies when i let off fuel is this comm. thanks for any info

 

changed oil it stoped

 

Get rid of the K&N, they make junk. You'll damage your turbo from the dirt it lets through..

 

FI.. What information do you have that qualifies that company's products as "Junk"????? And the common courtesy when you suggest that someone remove A part would be to suggest A proper replacement..... Was your turbo damaged after installing A K&N Filter? Or some story you have heard of A guy who knows A guy who heard A guy who said their junk??? ...

Rhino.

 

Physics and ISO testing.

The factory cold air intake.

Why would I waste money on junk?

 

in my old 93 cummins i have had K&N in it for over 500000 so if its JUNK when is it going to dust my moter at 750000 or so

 

There was a new K&N brick filter on my truck when I bought it (in the factory air box). Had one look at it and I threw the thing in the garbage. K&N might be fine for a gas rig but these engines require too much air for a K&N to effectively handle. JMO.

 

are you saying it will not get enough air

 

I have one on my truck It works just fine. It is a diesel filter made for a diesel. If you wash it and take care of it will work just fine.

 

No, we're saying it will get too much dirt.

LOL, no such thing.

A K&N requires frequent maintenance, has a very small filtering surface area, plugs up quickly and doesn't filter well..... VS the stock $14 paper filter that filters very well, isn't restrictive (especially as it collects more dirt), is a true cold air intake and only needs to be changed once a year? So, where is the benefit again?
The $280 of your K&N "cold" air intake would cover 10-20 years worth of air filters!