Just installed mine yesterday on my 2018 Ram 1500 Ecodiesel. Left the house this morning on the first drive (in the lowest setting) – for a 150 mile round trip. Within 1/2 mile of leaving the house, I could already tell the difference in throttle response & acceleration. The truck already gets great mpg so any improvement would be exceptional. Next trip I am going to set it to the middle setting. Happy customer so far 👍

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