| I have AirAid intakes on both my trucks and noticed a difference. The duramax from what I hear doesn't need one until you get pushing 450-500hp or more, but you will be able to gain a little fuel eco out of one regardless. I like AirAid because of their warranty, their customer service, and formost their designs. They will only release an intake with significant gains over stock, and if there is no gain in losing the factory silencer tube, they won't. They have great products. |