Our quest to build the best tuned Porsche 944’s continues, with many late nights and long weekends developing the control system for our Porsche 944 treadmill! Here’s a quick video to show some testing of our rolling road control system. We are testing the control of roller speed used to hold speed sites whilst mapping is carried out. The idea is that throttle position can be varied without the engine speed changing. This requires feedback control of the electromagnetic brake force to match the changes in engine load. The car on test is a Porsche 944 2.5 8V Automatic.