: Well, as most of you know I have sold my 850i but, I was the first car with the Conforti chips, so I though I would throw my two cents in. First, the chips made an enormous difference in the seat of the pants feel of the car across the entire RPM range starting about 2500 RPM. The data posted would support this. Also, I noticed a bit BETTER gas mileage on the freeway. Obviously a function of leaning out the fuel. Finally, we also tested the Dinan chips side by side with the new Conforti chips. I must say that the Conforti chips outperformed the Dinan chips in both torque and HP. I also had no problems with initial stall as has been reported.