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View Full Version : Powerstroke Diesel Problems


darrenlongbed
Jun 18, 2012, 05:32 PM
I have a 04 F350 Power stroke. I installed a K&N air filter 2 years ago, ever since I have changed the stock with after market, I can not get the same power as before. When I purchased the K&N, I was told that it would give a little more power not much but, a little.