Reply to "K&N air filter for Duramax Diesel- Yes or No"

Eric DyeLOA's humble servant FounderLance AmbassadorLifetime MemberTrailmaster

I have an 03 Duramax and I run the standard filter. The K&Ns let too much air and particles through for normal driving. If you are drag racing and trying to squeek every last bit of HP out of your truck, then K&N might be ok. The HP gains are actually negligable on daily driving applications.

The most important filters on the truck are your fuel filters and water separators. Make sure those are new and change them on schedule. I run extra filtration from a company called FASS. https://www.youtube.com/watch?v=NqfE1eqfTwU

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3/10/247:46 AM

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