Either Too Complicated or Not Effective
After installing initial update, I believe u successfully completed and uploaded a tune onto my vehicle. When I noticed no difference in performance, I changed parameters; again, I did not see a difference from my stock tune. Personally, I believe the biggest let-down from DS, and the reason I rated with only one star, is the lack of initial information. Without an effective owner's manual indicating step by step installation instructions, providing general information about what each tune m
Didn't exceed expectations
Overall it's a good product if you know how to tune a vehicle or are planning to purchase a custom tune. I didn't provide very noticeable horsepower gains with the canned tunes. I like the appearance and the ease off install but you have to be computer savvy to get everything from this tuner. It's not fot a beginner in my opinoin.
I have an 07' Dodge 2500 with the 5.9 Cummins. Intake, exhaust, and gauges. I uploaded the tow tune and corrected my tire size to re calibrate my speedometer. The power improvements were very impressive and the power delivery seemed much more refined. Very happy with the purchase.