Bought my E-Con because I wanted safe power and pulling improvements. I realy did not need any shifting improvements since its my left foot and right hands that does the shifting. I would not mind having the cooling fan controling program I can stand to have more heat on my truck when pulling, I find my engine runs to cool. Much cooler then my GM did for sure. And the cooling fan does use up to 15HP when on, and I found I can move around unloaded using 35HP. The E-Con uses the first 2 stages and both in tow. I find the A setting feels safer and still gives me lots power. The setting B changes my Fuel flow by 43% and the A setting by 17%.