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I found a credible third party test on filters. (BTW Bobistheoilguy.com is a great site for all things PM related) The AC Delco filter is 99.9% in the test below. The K&N, 96.8%. Sounds great huh? That's only 3% difference right? Now pay attention to the dirt passed. The AC Delco, 0.4g...

There's been two or three notices from Chrysler when it comes to the Cummins engines. They specifically inform the shop to check for a few signs in the ECM (lack of key counts, showing that the battery was recently disconnected or a flash was recently ran on the ECM) and to check the air...

I've owned them before, but after seeing dust in the intake tube, then my friend service manager showing me the statement from Dodge (Kiss your warranty goodbye if they find one), I decided it wasn't worth the 2hp it might make.

Sure does, sounds like the dirt sandblasting the top end. :shock:

I turn the screws on every diesel I own. They all put out more power than they orginally were designed to. But I WON'T put a POS K&N filter on even my lawnmower.