Cool! Amazing how much quieter the 6.7 is compared to the 3rd gen. Common rail 5.9. I've got 300,000+ on my 2007.5 Only issue was Turbo went at 100000 but after removing the EGR no more issues with the turbo loading up with soot. Just did all four ball joints, tie rod ends and front rotors brakes last month, Mine gets up to 21.5 on the freeway with the Smarty module on 100 hp setting, a tad better on mileage setting.
What is the Hippo line all about?