GMC / Chevrolet Duramax

February 2023, I purchased a performance module for my 3L EcoDiesel. While I was a little skeptical at first, the owner, Allan assured me that he would refund my money if I was not completely satisfied. Well, I have to say I am very impressed with the improved low end horsepower. Not only that, I’m up 3 miles a gallon “at the pump” making it a great investment. In fact, I am so impressed with the module’s performance, I bought another for my brother for his 5.9L Cummins. Thank you for a great product.

I just left Phoenix area. Heading to Oregon via I 5, my 03 Ram 3500 has never done great on mpg. So I bought one of these with hopes. Well, I did 10 mpg every tank full on the flats, and in the mountains. What make this worth the money to me is, I set the cruise at 63 and sit back. Going up the mountain with no kicking in and out of the passing gear. A smooth and easy 1800 rpm.

I purchased the module for my 2010 Revolution LE 42T early Jun 2023 prior to our vacation trip to Julian, CA. I have a 400 Turbo Cummins in our coach. Near Pahrump, NV, we and noticed a significant increase in power. I maintain 55-60 MPH up hills without putting my foot in it and that was really nice. (I travel in the Coach cruise at 65 MPH). We took SR 79 towards Warner Springs which is pretty windy and very hilly. The performance was very good. Pedal response to power excellent. The climb up from Santa Ysabel was surprising, to accelerate to 50 and climbing that I had to lay off the pedal pressure. The only drawback is that I haven’t seen a mpg increase yet. BTW, besides my coach, I had my custom tow dolly with my buggy and my Toyota 4X4 in tow.

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 👍