I have cheapy stage 4 nozzles and my truck lopes. When I had a Torque Dog on there it only did it when it was over 68 degrees and the motor was warmed up. Now that I have a juice on there it lopes no matter how hot or cold it is outside, setting 1-5, when the motors warm. Also when its in neutral or park. It sounds so nasty bad ass though. It will lope in gear but I have to be hardly idling around a parking lot.