http://www.aemelectronics.com/dyno-shaft-on-vehicle-dyno-73/?osCsid=308e8qqqe2dlm5rbnc9tli3o11
AEM’s Sportsman Series Dyno-Shaft on-vehicle dynamometer system is literally a dyno on your car. It is as accurate as the most respected dynamometers in the industry. It provides real, accurate Horsepower and Torque numbers that are produced by measuring a vehicle’s Torque and RPM at the driveline, while you drive! The Dyno-Shaft Sportsman Series is designed for competitive amateur racers and serious performance enthusiasts whose applications can utilize a cast iron slip yoke. For higher stress applications, the Dyno-Shaft Pro Series kit features a CNC-machined Chrome Moly slip yoke.
Measures Torque and RPM at the driveline to deliver real Horsepower and Torque numbers Does not skew readings like accelerometer-based units – No assumptions, real data! Eliminates guesswork when troubleshooting or making changes at the track Create dyno charts which can be saved, printed, or shared electronically (requires AQ-1 Data Logger) Sportsman slip yoke is manufactured from ductile cast iron Sportsman slip yoke splines are manufactured from a broaching process that produces industry-leading mating fit parts Sportsman slip yoke is temperature compensated and individually calibrated (two-point calibration) for load
Very interestinggggg.....