I’ve had my edge ez/RV275 injectors on my 01 since 03. 181k on it now and no probs. Great towing power and no regrets. If you’re towing without gauges keep the rpms 2000 2200 on grades, but I’d still put a pyro and boost gauge on. My lift pump is still the stock style. Not sold on that 15psi BS.... I do monitor it with a mech gauge.