I have about 80 miles on mine now. It was set up by Carls Cycle and I am running 9-9.5lbs and 3-4 gallons of 110(partially because our crappy California fuel). The more I ride it the better it gets. I believe the DET issue I first saw, like many, was due to a boost spike with the new actuator spring. As it breaks in.....this is not happening. I know some people running 8lbs on pump, so I personally do not think it is a detonation issue. As far as as the DET light coming on and going into limp mode, I only saw that the first 20-30 miles. Like I said, I think the boost spike was part of it. The only thing I have seen that is a problem is that sometimes if you are at lower speeds, like I was today, in deep powder and on a steep hill.....and then you stab the throttle....it did bog on me a couple times, would not increase rpms or develop boost. It almost seemed pig rich. If I went back up the same hill, same conditions, and slowly got into the throttle, this would not happen. Now, when this did happen, there was NO DET light. I am going to call BD tomorrow and see what they say. Overall, the sled flat rips and I am VERY happy with the Boondockers kit. At 9lbs it runs as good as my Dragon did at 10.5-11lbs, IMO. I am sure here in the next couple weeks with more of these on the snow, these things will only get better.