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Originally Posted by CpjMech
I went back to a paper air filter on my Dodge Cummins after steady oil samples showed increasing silicon (dirt) in the engine oil. The very next oil sample after going back to paper showed silicon back to normal levels. The one thing they were right on was increased airflow, she gained 2psi boost....but at what cost??? I'll stick w/ the paper. Just my 2 cents.
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+1
I think you have to ask about your riding/driving environment also. If you have very mild intake conditions, and regular OCI's it probably wont hurt anything. The K&N supposedly shouldnt be cleaned until 20-30K miles, at which point dirt is actually used at increasing the filtering efficiency. By keeping a clean filter, you get flow at the cost of reduced filtering. K&N is no magic bullet, its a trade off of dirt (silicon) vs. flow.