[JL8Jeff]

I haven't seen the Bullydog but I have the Diablosport Predator for my 01 Silverado and I was able to make changes to the injectors which helped me pick up about 1-1.5 mpg. I don't do much highway driving so my increase was really around town. I was also able to adjust the shift points, firmness, get rid of the catalytic overtemp protection, adjust for larger tires, etc. I think I paid $275 shipped for it from LMperformance.