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I just want maximum mpg's.......and can travel on highways at 58-60 mph which is the best way to get max mpg's.....I think the K&N's advantage is that it saves money for air filter replacements...but still takes 4-5 years to pay for itself..and you have to clean and wash and oil the thing.....then let it dry......I was told K&N filters are not for large engines like the Titan.as the intake will suck the oil and dust on the sensors etc..which may cause damage and innacurate fuel mixture from the computer system..so I have a K&N in the box it came in..and not in the air filter plenum box for now..until someone can quantify if it is worth using....and without changing the exhaust.
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