Just got mine with the ECO tune. So far so good. The engine starts much quicker then it ever has, sounds more powerful even at idle. I notice it does not smoke up the garage like it used to. The EVIC is reporting 3 more MPG, and I only drove it around locally, all the while punching the accelerator I can feel it is much more responsive and more powerful. I have never got so much gratification out of spending $550 dollars, and I got so much more power and torque, with out even getting my hands dirty. Another thing I notice is the response is instant when you press the accelerator at a cruising speed, no lag or hesitation, sort of like speeding up an electric motor with a potentiometer. The GDE is sweet

Yah, the ECO tune is quite high on the fun meter. But then it's hard not to be with the added torque and the right foot planted.

Now that I got a second CRD, it was fun to drive but the novelty has worn off, now I go directly to the GDE tuned CRD, and let my wife drive the stocker I will be getting the tune on the new CRD shortly. The tuned one feels as if the drive shaft is connected directly to the engine, and it runs so much smoother.

Good Job GDE