"The Stage 1 Q-Chip for the G60 provides an incredible boost of power over the stock configuration. Peak flywheel horsepower is raised from 158hp to 172hp. The real benefits, however, are seen in the lower rpm ranges, where the car needs it most. Gains from 12 to 18 percent are seen between 2000 and 4000 rpm. That means a big increase in responsiveness and drivability. ECU number required."