You'll probably need a pryo for your exhaust tempatures. But, You DPF will clog faster the farther you turn it up! Also, take it easy on the tranny, 4-5-6 Shifts don't like it for long with the tuner set on hot...Just got the new ppe race hot2 e.t tunner for my LMM . What happens if iI run this tunner before I replace my exhaust??