according to the October 2009 Mopar Muscle Magazine- Tech 3 article "a little show, a little go"; some dealerships will tell you that installing a cold air intake will void your warrenty, however, installing a cold air system- like K&N system that they used, will not affect your warrenty at all. This is according to our Dodge dealership, which sells the K&N system. According to their after market sales rep, performance results are varied at higher speeds. So again, the balance factor seems to be the key, as always.