What are the differences between a manufacturer's internal dyno testing and aftermarket dyno testing?

FROUDE DYNAMOMETERS HAVE A CONSISTENT HIGH LEVEL OF CONTROL THROUGHOUT THE SPEED RANGE. This precise control is due to Froude's vaned rotor and stator design. The Off-Highway Vehicle Chassis Dynamometer Laboratory (Dyno Lab) offers capabilities for developmental vehicle testing and research. This page provides the chassis dynamometer driving schedules and shift schedules used by EPA for vehicle emissions and fuel economy testing. Pro-System has designed and built proprietary computer-controlled brake dynamometers to evaluate brake system components by simulating actual race conditions. This type of climatic chamber makes it possible to test the efficiency of the engine compartment under climatic stress during the typical working cycles of a ... The ARC driveline can test hybrid systems for the task using Bosch-Rexroth Secondary Control Technology. Secondary Control allows hydraulic systems to quickly ... Photo of large blue and red test machinery with a man looking up at it. ... A photo of a 225-kW dynamometer in a testing room. 225-kW Dynamometer. Ideal ... We've compiled a stack of dyno results for some of the more popular exhaust systems, revealing a lot about how they perform, and that information is presented ... An independent testing facility, to evaluate the performance of our products in areas of 1) emissions, and 2) fuel economy. Dyno Test Background and Methodology: This test was between two of our Evo 8/9 Divided T4 standard placement/bottom mount manifolds, with the runner/primary ...