Chassis dynamometers serve to quickly identify service issues such as low horsepower, overheating, emissions compliance and speedometer accuracy. The dynamometer also verifies if the problem is corrected. Features and benefits include: horsepower ranges from 50 to 1100 HP at 40 MPH; can accommodate axle spreads from 48 to 74 inches; interfaces with DynPro, the most advanced dynamometer control and data acquisition instrumentation; and DynPro allows for complete access to all ECM channels.