Why Tune on a Dyno & not on the road? Road mapping is sometimes a bit cheaper?

Road mapping is risky business. It is very dangerous (and most times illegal) to run a car through its rpm range on public roads (especially with all the potholes we have around here). In addition, the vehicle cannot be run through all the rpm or load sites long enough to get an accurate Air Fuel Ratio Reading and how are you going to determine the torque output of the vehicle? This is the basis for making changes to your fuel and ignition maps. Tuning on a dyno provides accurate data in a controlled environment throughout the ECU’s RPM and Load Ranges, without endangering you, others, or your property. Our Dyno Dynamics eddy current control dyno can hold at steady state any point within the map, to find the optimal fuel and timing combination. This speeds up and enhances the tuning or troubleshooting process.