I just joined recently so I have some questions.
First off I have a new 2019 Ram eco diesel that does not even have one oil change yet and this is my first diesel so all of this is new to me.
So I am not sure what a ECU is or even how to tune it, or what benefit it is to tune it.
But I did but it in gear and it did not move.
Please send information as Knowledge is Power
The ECU is the computer that runs your engine. An ECU tune is when a company rewrites the software that run the engine and optimizes it. Making it work better. On the Eco Diesel engine, tunes can make a big difference in the mileage, engine life, and power.